diff --git a/webrtc/common_audio/audio_converter.cc b/webrtc/common_audio/audio_converter.cc
index d6334b3866..9ebfabc286 100644
--- a/webrtc/common_audio/audio_converter.cc
+++ b/webrtc/common_audio/audio_converter.cc
@@ -136,11 +136,11 @@ class CompositionConverter : public AudioConverter {
   ScopedVector<ChannelBuffer<float>> buffers_;
 };
 
-std::unique_ptr<AudioConverter> AudioConverter::Create(size_t src_channels,
+rtc::scoped_ptr<AudioConverter> AudioConverter::Create(size_t src_channels,
                                                        size_t src_frames,
                                                        size_t dst_channels,
                                                        size_t dst_frames) {
-  std::unique_ptr<AudioConverter> sp;
+  rtc::scoped_ptr<AudioConverter> sp;
   if (src_channels > dst_channels) {
     if (src_frames != dst_frames) {
       ScopedVector<AudioConverter> converters;
diff --git a/webrtc/common_audio/audio_converter.h b/webrtc/common_audio/audio_converter.h
index 01dad4dfc8..c5f08c1d9b 100644
--- a/webrtc/common_audio/audio_converter.h
+++ b/webrtc/common_audio/audio_converter.h
@@ -11,9 +11,8 @@
 #ifndef WEBRTC_COMMON_AUDIO_AUDIO_CONVERTER_H_
 #define WEBRTC_COMMON_AUDIO_AUDIO_CONVERTER_H_
 
-#include <memory>
-
 #include "webrtc/base/constructormagic.h"
+#include "webrtc/base/scoped_ptr.h"
 
 namespace webrtc {
 
@@ -27,7 +26,7 @@ class AudioConverter {
  public:
   // Returns a new AudioConverter, which will use the supplied format for its
   // lifetime. Caller is responsible for the memory.
-  static std::unique_ptr<AudioConverter> Create(size_t src_channels,
+  static rtc::scoped_ptr<AudioConverter> Create(size_t src_channels,
                                                 size_t src_frames,
                                                 size_t dst_channels,
                                                 size_t dst_frames);
diff --git a/webrtc/common_audio/audio_converter_unittest.cc b/webrtc/common_audio/audio_converter_unittest.cc
index f86e37b26f..dace0bdccf 100644
--- a/webrtc/common_audio/audio_converter_unittest.cc
+++ b/webrtc/common_audio/audio_converter_unittest.cc
@@ -10,19 +10,19 @@
 
 #include <cmath>
 #include <algorithm>
-#include <memory>
 #include <vector>
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "webrtc/base/arraysize.h"
 #include "webrtc/base/format_macros.h"
+#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/common_audio/audio_converter.h"
 #include "webrtc/common_audio/channel_buffer.h"
 #include "webrtc/common_audio/resampler/push_sinc_resampler.h"
 
 namespace webrtc {
 
-typedef std::unique_ptr<ChannelBuffer<float>> ScopedBuffer;
+typedef rtc::scoped_ptr<ChannelBuffer<float>> ScopedBuffer;
 
 // Sets the signal value to increase by |data| with every sample.
 ScopedBuffer CreateBuffer(const std::vector<float>& data, size_t frames) {
@@ -132,7 +132,7 @@ void RunAudioConverterTest(size_t src_channels,
   printf("(%" PRIuS ", %d Hz) -> (%" PRIuS ", %d Hz) ",
          src_channels, src_sample_rate_hz, dst_channels, dst_sample_rate_hz);
 
-  std::unique_ptr<AudioConverter> converter = AudioConverter::Create(
+  rtc::scoped_ptr<AudioConverter> converter = AudioConverter::Create(
       src_channels, src_frames, dst_channels, dst_frames);
   converter->Convert(src_buffer->channels(), src_buffer->size(),
                      dst_buffer->channels(), dst_buffer->size());
diff --git a/webrtc/common_audio/audio_ring_buffer.h b/webrtc/common_audio/audio_ring_buffer.h
index e73f55b73b..58e543adea 100644
--- a/webrtc/common_audio/audio_ring_buffer.h
+++ b/webrtc/common_audio/audio_ring_buffer.h
@@ -47,7 +47,7 @@ class AudioRingBuffer final {
 
  private:
   // We don't use a ScopedVector because it doesn't support a specialized
-  // deleter (like unique_ptr for instance.)
+  // deleter (like scoped_ptr for instance.)
   std::vector<RingBuffer*> buffers_;
 };
 
diff --git a/webrtc/common_audio/audio_ring_buffer_unittest.cc b/webrtc/common_audio/audio_ring_buffer_unittest.cc
index c5c38de56d..a7a6a9442b 100644
--- a/webrtc/common_audio/audio_ring_buffer_unittest.cc
+++ b/webrtc/common_audio/audio_ring_buffer_unittest.cc
@@ -8,8 +8,6 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include <memory>
-
 #include "webrtc/common_audio/audio_ring_buffer.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
@@ -29,7 +27,7 @@ void ReadAndWriteTest(const ChannelBuffer<float>& input,
   const size_t num_channels = input.num_channels();
   const size_t total_frames = input.num_frames();
   AudioRingBuffer buf(num_channels, buffer_frames);
-  std::unique_ptr<float* []> slice(new float*[num_channels]);
+  rtc::scoped_ptr<float* []> slice(new float* [num_channels]);
 
   size_t input_pos = 0;
   size_t output_pos = 0;
diff --git a/webrtc/common_audio/blocker.h b/webrtc/common_audio/blocker.h
index edf81d337a..3a67c134d0 100644
--- a/webrtc/common_audio/blocker.h
+++ b/webrtc/common_audio/blocker.h
@@ -11,8 +11,7 @@
 #ifndef WEBRTC_INTERNAL_BEAMFORMER_BLOCKER_H_
 #define WEBRTC_INTERNAL_BEAMFORMER_BLOCKER_H_
 
-#include <memory>
-
+#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/common_audio/audio_ring_buffer.h"
 #include "webrtc/common_audio/channel_buffer.h"
 
@@ -110,7 +109,7 @@ class Blocker {
   // Space for the output block (can't wrap because of overlap/add).
   ChannelBuffer<float> output_block_;
 
-  std::unique_ptr<float[]> window_;
+  rtc::scoped_ptr<float[]> window_;
 
   // The amount of frames between the start of contiguous blocks. For example,
   // |shift_amount_| = |block_size_| / 2 for a Hann window.
diff --git a/webrtc/common_audio/blocker_unittest.cc b/webrtc/common_audio/blocker_unittest.cc
index eea3e2516a..a5a7b56282 100644
--- a/webrtc/common_audio/blocker_unittest.cc
+++ b/webrtc/common_audio/blocker_unittest.cc
@@ -8,8 +8,6 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include <memory>
-
 #include "webrtc/common_audio/blocker.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
@@ -309,7 +307,7 @@ TEST_F(BlockerTest, InitialDelaysAreMinimum) {
   CopyBlockerCallback callback;
 
   for (size_t i = 0; i < arraysize(kChunkSize); ++i) {
-    std::unique_ptr<float[]> window(new float[kBlockSize[i]]);
+    rtc::scoped_ptr<float[]> window(new float[kBlockSize[i]]);
     for (size_t j = 0; j < kBlockSize[i]; ++j) {
       window[j] = 1.f;
     }
diff --git a/webrtc/common_audio/channel_buffer.cc b/webrtc/common_audio/channel_buffer.cc
index 349d4245cc..44520c6100 100644
--- a/webrtc/common_audio/channel_buffer.cc
+++ b/webrtc/common_audio/channel_buffer.cc
@@ -10,8 +10,6 @@
 
 #include "webrtc/common_audio/channel_buffer.h"
 
-#include "webrtc/base/checks.h"
-
 namespace webrtc {
 
 IFChannelBuffer::IFChannelBuffer(size_t num_frames,
@@ -46,7 +44,7 @@ const ChannelBuffer<float>* IFChannelBuffer::fbuf_const() const {
 
 void IFChannelBuffer::RefreshF() const {
   if (!fvalid_) {
-    RTC_DCHECK(ivalid_);
+    assert(ivalid_);
     const int16_t* const* int_channels = ibuf_.channels();
     float* const* float_channels = fbuf_.channels();
     for (size_t i = 0; i < ibuf_.num_channels(); ++i) {
@@ -60,7 +58,7 @@ void IFChannelBuffer::RefreshF() const {
 
 void IFChannelBuffer::RefreshI() const {
   if (!ivalid_) {
-    RTC_DCHECK(fvalid_);
+    assert(fvalid_);
     int16_t* const* int_channels = ibuf_.channels();
     const float* const* float_channels = fbuf_.channels();
     for (size_t i = 0; i < ibuf_.num_channels(); ++i) {
diff --git a/webrtc/common_audio/channel_buffer.h b/webrtc/common_audio/channel_buffer.h
index faecec9194..9f2fb96357 100644
--- a/webrtc/common_audio/channel_buffer.h
+++ b/webrtc/common_audio/channel_buffer.h
@@ -13,10 +13,9 @@
 
 #include <string.h>
 
-#include <memory>
-
 #include "webrtc/base/checks.h"
 #include "webrtc/base/gtest_prod_util.h"
+#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/common_audio/include/audio_util.h"
 
 namespace webrtc {
@@ -126,9 +125,9 @@ class ChannelBuffer {
   }
 
  private:
-  std::unique_ptr<T[]> data_;
-  std::unique_ptr<T* []> channels_;
-  std::unique_ptr<T* []> bands_;
+  rtc::scoped_ptr<T[]> data_;
+  rtc::scoped_ptr<T* []> channels_;
+  rtc::scoped_ptr<T* []> bands_;
   const size_t num_frames_;
   const size_t num_frames_per_band_;
   const size_t num_channels_;
diff --git a/webrtc/common_audio/fir_filter.cc b/webrtc/common_audio/fir_filter.cc
index 13a2237dae..dc1b776f99 100644
--- a/webrtc/common_audio/fir_filter.cc
+++ b/webrtc/common_audio/fir_filter.cc
@@ -13,8 +13,7 @@
 #include <assert.h>
 #include <string.h>
 
-#include <memory>
-
+#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/common_audio/fir_filter_neon.h"
 #include "webrtc/common_audio/fir_filter_sse.h"
 #include "webrtc/system_wrappers/include/cpu_features_wrapper.h"
@@ -31,8 +30,8 @@ class FIRFilterC : public FIRFilter {
  private:
   size_t coefficients_length_;
   size_t state_length_;
-  std::unique_ptr<float[]> coefficients_;
-  std::unique_ptr<float[]> state_;
+  rtc::scoped_ptr<float[]> coefficients_;
+  rtc::scoped_ptr<float[]> state_;
 };
 
 FIRFilter* FIRFilter::Create(const float* coefficients,
diff --git a/webrtc/common_audio/fir_filter_neon.h b/webrtc/common_audio/fir_filter_neon.h
index 5576856b72..3aa6168dd2 100644
--- a/webrtc/common_audio/fir_filter_neon.h
+++ b/webrtc/common_audio/fir_filter_neon.h
@@ -11,8 +11,7 @@
 #ifndef WEBRTC_COMMON_AUDIO_FIR_FILTER_NEON_H_
 #define WEBRTC_COMMON_AUDIO_FIR_FILTER_NEON_H_
 
-#include <memory>
-
+#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/common_audio/fir_filter.h"
 #include "webrtc/system_wrappers/include/aligned_malloc.h"
 
@@ -29,8 +28,8 @@ class FIRFilterNEON : public FIRFilter {
  private:
   size_t coefficients_length_;
   size_t state_length_;
-  std::unique_ptr<float[], AlignedFreeDeleter> coefficients_;
-  std::unique_ptr<float[], AlignedFreeDeleter> state_;
+  rtc::scoped_ptr<float[], AlignedFreeDeleter> coefficients_;
+  rtc::scoped_ptr<float[], AlignedFreeDeleter> state_;
 };
 
 }  // namespace webrtc
diff --git a/webrtc/common_audio/fir_filter_sse.cc b/webrtc/common_audio/fir_filter_sse.cc
index 89abb00ba4..adbb2b75cc 100644
--- a/webrtc/common_audio/fir_filter_sse.cc
+++ b/webrtc/common_audio/fir_filter_sse.cc
@@ -11,7 +11,6 @@
 #include "webrtc/common_audio/fir_filter_sse.h"
 
 #include <assert.h>
-#include <stdint.h>
 #include <string.h>
 #include <xmmintrin.h>
 
diff --git a/webrtc/common_audio/fir_filter_sse.h b/webrtc/common_audio/fir_filter_sse.h
index 3b1e324fc8..a3325cd01d 100644
--- a/webrtc/common_audio/fir_filter_sse.h
+++ b/webrtc/common_audio/fir_filter_sse.h
@@ -11,8 +11,7 @@
 #ifndef WEBRTC_COMMON_AUDIO_FIR_FILTER_SSE_H_
 #define WEBRTC_COMMON_AUDIO_FIR_FILTER_SSE_H_
 
-#include <memory>
-
+#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/common_audio/fir_filter.h"
 #include "webrtc/system_wrappers/include/aligned_malloc.h"
 
@@ -29,8 +28,8 @@ class FIRFilterSSE2 : public FIRFilter {
  private:
   size_t coefficients_length_;
   size_t state_length_;
-  std::unique_ptr<float[], AlignedFreeDeleter> coefficients_;
-  std::unique_ptr<float[], AlignedFreeDeleter> state_;
+  rtc::scoped_ptr<float[], AlignedFreeDeleter> coefficients_;
+  rtc::scoped_ptr<float[], AlignedFreeDeleter> state_;
 };
 
 }  // namespace webrtc
diff --git a/webrtc/common_audio/fir_filter_unittest.cc b/webrtc/common_audio/fir_filter_unittest.cc
index 9dffcb615f..13f79d9482 100644
--- a/webrtc/common_audio/fir_filter_unittest.cc
+++ b/webrtc/common_audio/fir_filter_unittest.cc
@@ -12,9 +12,8 @@
 
 #include <string.h>
 
-#include <memory>
-
 #include "testing/gtest/include/gtest/gtest.h"
+#include "webrtc/base/scoped_ptr.h"
 
 namespace webrtc {
 namespace {
@@ -41,7 +40,7 @@ void VerifyOutput(const float* expected_output,
 TEST(FIRFilterTest, FilterAsIdentity) {
   const float kCoefficients[] = {1.f, 0.f, 0.f, 0.f, 0.f};
   float output[kInputLength];
-  std::unique_ptr<FIRFilter> filter(
+  rtc::scoped_ptr<FIRFilter> filter(
       FIRFilter::Create(kCoefficients, kCoefficientsLength, kInputLength));
   filter->Filter(kInput, kInputLength, output);
 
@@ -51,7 +50,7 @@ TEST(FIRFilterTest, FilterAsIdentity) {
 TEST(FIRFilterTest, FilterUsedAsScalarMultiplication) {
   const float kCoefficients[] = {5.f, 0.f, 0.f, 0.f, 0.f};
   float output[kInputLength];
-  std::unique_ptr<FIRFilter> filter(
+  rtc::scoped_ptr<FIRFilter> filter(
       FIRFilter::Create(kCoefficients, kCoefficientsLength, kInputLength));
   filter->Filter(kInput, kInputLength, output);
 
@@ -64,7 +63,7 @@ TEST(FIRFilterTest, FilterUsedAsScalarMultiplication) {
 TEST(FIRFilterTest, FilterUsedAsInputShifting) {
   const float kCoefficients[] = {0.f, 0.f, 0.f, 0.f, 1.f};
   float output[kInputLength];
-  std::unique_ptr<FIRFilter> filter(
+  rtc::scoped_ptr<FIRFilter> filter(
       FIRFilter::Create(kCoefficients, kCoefficientsLength, kInputLength));
   filter->Filter(kInput, kInputLength, output);
 
@@ -77,7 +76,7 @@ TEST(FIRFilterTest, FilterUsedAsInputShifting) {
 
 TEST(FIRFilterTest, FilterUsedAsArbitraryWeighting) {
   float output[kInputLength];
-  std::unique_ptr<FIRFilter> filter(
+  rtc::scoped_ptr<FIRFilter> filter(
       FIRFilter::Create(kCoefficients, kCoefficientsLength, kInputLength));
   filter->Filter(kInput, kInputLength, output);
 
@@ -90,7 +89,7 @@ TEST(FIRFilterTest, FilterUsedAsArbitraryWeighting) {
 
 TEST(FIRFilterTest, FilterInLengthLesserOrEqualToCoefficientsLength) {
   float output[kInputLength];
-  std::unique_ptr<FIRFilter> filter(
+  rtc::scoped_ptr<FIRFilter> filter(
       FIRFilter::Create(kCoefficients, kCoefficientsLength, 2));
   filter->Filter(kInput, 2, output);
 
@@ -107,7 +106,7 @@ TEST(FIRFilterTest, FilterInLengthLesserOrEqualToCoefficientsLength) {
 
 TEST(FIRFilterTest, MultipleFilterCalls) {
   float output[kInputLength];
-  std::unique_ptr<FIRFilter> filter(
+  rtc::scoped_ptr<FIRFilter> filter(
       FIRFilter::Create(kCoefficients, kCoefficientsLength, 3));
   filter->Filter(kInput, 2, output);
   EXPECT_FLOAT_EQ(0.2f, output[0]);
@@ -138,7 +137,7 @@ TEST(FIRFilterTest, MultipleFilterCalls) {
 
 TEST(FIRFilterTest, VerifySampleBasedVsBlockBasedFiltering) {
   float output_block_based[kInputLength];
-  std::unique_ptr<FIRFilter> filter(
+  rtc::scoped_ptr<FIRFilter> filter(
       FIRFilter::Create(kCoefficients, kCoefficientsLength, kInputLength));
   filter->Filter(kInput, kInputLength, output_block_based);
 
@@ -163,7 +162,7 @@ TEST(FIRFilterTest, SimplestHighPassFilter) {
       sizeof(kConstantInput[0]);
 
   float output[kConstantInputLength];
-  std::unique_ptr<FIRFilter> filter(FIRFilter::Create(
+  rtc::scoped_ptr<FIRFilter> filter(FIRFilter::Create(
       kCoefficients, kCoefficientsLength, kConstantInputLength));
   filter->Filter(kConstantInput, kConstantInputLength, output);
   EXPECT_FLOAT_EQ(1.f, output[0]);
@@ -182,7 +181,7 @@ TEST(FIRFilterTest, SimplestLowPassFilter) {
                                         sizeof(kHighFrequencyInput[0]);
 
   float output[kHighFrequencyInputLength];
-  std::unique_ptr<FIRFilter> filter(FIRFilter::Create(
+  rtc::scoped_ptr<FIRFilter> filter(FIRFilter::Create(
       kCoefficients, kCoefficientsLength, kHighFrequencyInputLength));
   filter->Filter(kHighFrequencyInput, kHighFrequencyInputLength, output);
   EXPECT_FLOAT_EQ(-1.f, output[0]);
@@ -194,7 +193,7 @@ TEST(FIRFilterTest, SimplestLowPassFilter) {
 TEST(FIRFilterTest, SameOutputWhenSwapedCoefficientsAndInput) {
   float output[kCoefficientsLength];
   float output_swaped[kCoefficientsLength];
-  std::unique_ptr<FIRFilter> filter(FIRFilter::Create(
+  rtc::scoped_ptr<FIRFilter> filter(FIRFilter::Create(
       kCoefficients, kCoefficientsLength, kCoefficientsLength));
   // Use kCoefficientsLength for in_length to get same-length outputs.
   filter->Filter(kInput, kCoefficientsLength, output);
diff --git a/webrtc/common_audio/include/audio_util.h b/webrtc/common_audio/include/audio_util.h
index e5ad701595..55dfc06a31 100644
--- a/webrtc/common_audio/include/audio_util.h
+++ b/webrtc/common_audio/include/audio_util.h
@@ -15,6 +15,7 @@
 #include <cstring>
 
 #include "webrtc/base/checks.h"
+#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
diff --git a/webrtc/common_audio/lapped_transform.h b/webrtc/common_audio/lapped_transform.h
index 832735991b..1373ca10e1 100644
--- a/webrtc/common_audio/lapped_transform.h
+++ b/webrtc/common_audio/lapped_transform.h
@@ -12,8 +12,8 @@
 #define WEBRTC_COMMON_AUDIO_LAPPED_TRANSFORM_H_
 
 #include <complex>
-#include <memory>
 
+#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/common_audio/blocker.h"
 #include "webrtc/common_audio/real_fourier.h"
 #include "webrtc/system_wrappers/include/aligned_array.h"
@@ -112,7 +112,7 @@ class LappedTransform {
   Callback* const block_processor_;
   Blocker blocker_;
 
-  std::unique_ptr<RealFourier> fft_;
+  rtc::scoped_ptr<RealFourier> fft_;
   const size_t cplx_length_;
   AlignedArray<float> real_buf_;
   AlignedArray<std::complex<float> > cplx_pre_;
diff --git a/webrtc/common_audio/real_fourier.cc b/webrtc/common_audio/real_fourier.cc
index 67f942d560..55ec49cba2 100644
--- a/webrtc/common_audio/real_fourier.cc
+++ b/webrtc/common_audio/real_fourier.cc
@@ -21,11 +21,11 @@ using std::complex;
 
 const size_t RealFourier::kFftBufferAlignment = 32;
 
-std::unique_ptr<RealFourier> RealFourier::Create(int fft_order) {
+rtc::scoped_ptr<RealFourier> RealFourier::Create(int fft_order) {
 #if defined(RTC_USE_OPENMAX_DL)
-  return std::unique_ptr<RealFourier>(new RealFourierOpenmax(fft_order));
+  return rtc::scoped_ptr<RealFourier>(new RealFourierOpenmax(fft_order));
 #else
-  return std::unique_ptr<RealFourier>(new RealFourierOoura(fft_order));
+  return rtc::scoped_ptr<RealFourier>(new RealFourierOoura(fft_order));
 #endif
 }
 
diff --git a/webrtc/common_audio/real_fourier.h b/webrtc/common_audio/real_fourier.h
index 5e83e37f70..0be56a58b0 100644
--- a/webrtc/common_audio/real_fourier.h
+++ b/webrtc/common_audio/real_fourier.h
@@ -12,8 +12,8 @@
 #define WEBRTC_COMMON_AUDIO_REAL_FOURIER_H_
 
 #include <complex>
-#include <memory>
 
+#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/system_wrappers/include/aligned_malloc.h"
 
 // Uniform interface class for the real DFT and its inverse, for power-of-2
@@ -25,8 +25,8 @@ namespace webrtc {
 class RealFourier {
  public:
   // Shorthand typenames for the scopers used by the buffer allocation helpers.
-  typedef std::unique_ptr<float[], AlignedFreeDeleter> fft_real_scoper;
-  typedef std::unique_ptr<std::complex<float>[], AlignedFreeDeleter>
+  typedef rtc::scoped_ptr<float[], AlignedFreeDeleter> fft_real_scoper;
+  typedef rtc::scoped_ptr<std::complex<float>[], AlignedFreeDeleter>
       fft_cplx_scoper;
 
   // The alignment required for all input and output buffers, in bytes.
@@ -34,7 +34,7 @@ class RealFourier {
 
   // Construct a wrapper instance for the given input order, which must be
   // between 1 and kMaxFftOrder, inclusively.
-  static std::unique_ptr<RealFourier> Create(int fft_order);
+  static rtc::scoped_ptr<RealFourier> Create(int fft_order);
   virtual ~RealFourier() {};
 
   // Helper to compute the smallest FFT order (a power of 2) which will contain
diff --git a/webrtc/common_audio/real_fourier_ooura.h b/webrtc/common_audio/real_fourier_ooura.h
index 99d09d78fe..8d094bf494 100644
--- a/webrtc/common_audio/real_fourier_ooura.h
+++ b/webrtc/common_audio/real_fourier_ooura.h
@@ -12,8 +12,8 @@
 #define WEBRTC_COMMON_AUDIO_REAL_FOURIER_OOURA_H_
 
 #include <complex>
-#include <memory>
 
+#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/common_audio/real_fourier.h"
 
 namespace webrtc {
@@ -35,8 +35,8 @@ class RealFourierOoura : public RealFourier {
   const size_t complex_length_;
   // These are work arrays for Ooura. The names are based on the comments in
   // fft4g.c.
-  const std::unique_ptr<size_t[]> work_ip_;
-  const std::unique_ptr<float[]> work_w_;
+  const rtc::scoped_ptr<size_t[]> work_ip_;
+  const rtc::scoped_ptr<float[]> work_w_;
 };
 
 }  // namespace webrtc
diff --git a/webrtc/common_audio/real_fourier_unittest.cc b/webrtc/common_audio/real_fourier_unittest.cc
index 367fec3851..eb5880ee8a 100644
--- a/webrtc/common_audio/real_fourier_unittest.cc
+++ b/webrtc/common_audio/real_fourier_unittest.cc
@@ -13,6 +13,7 @@
 #include <stdlib.h>
 
 #include "testing/gtest/include/gtest/gtest.h"
+#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/common_audio/real_fourier_openmax.h"
 #include "webrtc/common_audio/real_fourier_ooura.h"
 
diff --git a/webrtc/common_audio/resampler/include/push_resampler.h b/webrtc/common_audio/resampler/include/push_resampler.h
index 31e08e3640..eeda790497 100644
--- a/webrtc/common_audio/resampler/include/push_resampler.h
+++ b/webrtc/common_audio/resampler/include/push_resampler.h
@@ -11,8 +11,7 @@
 #ifndef WEBRTC_COMMON_AUDIO_RESAMPLER_INCLUDE_PUSH_RESAMPLER_H_
 #define WEBRTC_COMMON_AUDIO_RESAMPLER_INCLUDE_PUSH_RESAMPLER_H_
 
-#include <memory>
-
+#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
@@ -37,15 +36,15 @@ class PushResampler {
   int Resample(const T* src, size_t src_length, T* dst, size_t dst_capacity);
 
  private:
-  std::unique_ptr<PushSincResampler> sinc_resampler_;
-  std::unique_ptr<PushSincResampler> sinc_resampler_right_;
+  rtc::scoped_ptr<PushSincResampler> sinc_resampler_;
+  rtc::scoped_ptr<PushSincResampler> sinc_resampler_right_;
   int src_sample_rate_hz_;
   int dst_sample_rate_hz_;
   size_t num_channels_;
-  std::unique_ptr<T[]> src_left_;
-  std::unique_ptr<T[]> src_right_;
-  std::unique_ptr<T[]> dst_left_;
-  std::unique_ptr<T[]> dst_right_;
+  rtc::scoped_ptr<T[]> src_left_;
+  rtc::scoped_ptr<T[]> src_right_;
+  rtc::scoped_ptr<T[]> dst_left_;
+  rtc::scoped_ptr<T[]> dst_right_;
 };
 
 }  // namespace webrtc
diff --git a/webrtc/common_audio/resampler/push_sinc_resampler.h b/webrtc/common_audio/resampler/push_sinc_resampler.h
index 2ba60cac9c..cefc62aa2a 100644
--- a/webrtc/common_audio/resampler/push_sinc_resampler.h
+++ b/webrtc/common_audio/resampler/push_sinc_resampler.h
@@ -11,9 +11,8 @@
 #ifndef WEBRTC_COMMON_AUDIO_RESAMPLER_PUSH_SINC_RESAMPLER_H_
 #define WEBRTC_COMMON_AUDIO_RESAMPLER_PUSH_SINC_RESAMPLER_H_
 
-#include <memory>
-
 #include "webrtc/base/constructormagic.h"
+#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/common_audio/resampler/sinc_resampler.h"
 #include "webrtc/typedefs.h"
 
@@ -57,8 +56,8 @@ class PushSincResampler : public SincResamplerCallback {
   friend class PushSincResamplerTest;
   SincResampler* get_resampler_for_testing() { return resampler_.get(); }
 
-  std::unique_ptr<SincResampler> resampler_;
-  std::unique_ptr<float[]> float_buffer_;
+  rtc::scoped_ptr<SincResampler> resampler_;
+  rtc::scoped_ptr<float[]> float_buffer_;
   const float* source_ptr_;
   const int16_t* source_ptr_int_;
   const size_t destination_frames_;
diff --git a/webrtc/common_audio/resampler/push_sinc_resampler_unittest.cc b/webrtc/common_audio/resampler/push_sinc_resampler_unittest.cc
index afb0963c3f..17e3dba1e2 100644
--- a/webrtc/common_audio/resampler/push_sinc_resampler_unittest.cc
+++ b/webrtc/common_audio/resampler/push_sinc_resampler_unittest.cc
@@ -10,10 +10,10 @@
 
 #include <cmath>
 #include <cstring>
-#include <memory>
 
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/common_audio/include/audio_util.h"
 #include "webrtc/common_audio/resampler/push_sinc_resampler.h"
 #include "webrtc/common_audio/resampler/sinusoidal_linear_chirp_source.h"
@@ -71,10 +71,10 @@ void PushSincResamplerTest::ResampleBenchmarkTest(bool int_format) {
   // Source for data to be resampled.
   ZeroSource resampler_source;
 
-  std::unique_ptr<float[]> resampled_destination(new float[output_samples]);
-  std::unique_ptr<float[]> source(new float[input_samples]);
-  std::unique_ptr<int16_t[]> source_int(new int16_t[input_samples]);
-  std::unique_ptr<int16_t[]> destination_int(new int16_t[output_samples]);
+  rtc::scoped_ptr<float[]> resampled_destination(new float[output_samples]);
+  rtc::scoped_ptr<float[]> source(new float[input_samples]);
+  rtc::scoped_ptr<int16_t[]> source_int(new int16_t[input_samples]);
+  rtc::scoped_ptr<int16_t[]> destination_int(new int16_t[output_samples]);
 
   resampler_source.Run(input_samples, source.get());
   for (size_t i = 0; i < input_samples; ++i) {
@@ -153,11 +153,11 @@ void PushSincResamplerTest::ResampleTest(bool int_format) {
 
   // TODO(dalecurtis): If we switch to AVX/SSE optimization, we'll need to
   // allocate these on 32-byte boundaries and ensure they're sized % 32 bytes.
-  std::unique_ptr<float[]> resampled_destination(new float[output_samples]);
-  std::unique_ptr<float[]> pure_destination(new float[output_samples]);
-  std::unique_ptr<float[]> source(new float[input_samples]);
-  std::unique_ptr<int16_t[]> source_int(new int16_t[input_block_size]);
-  std::unique_ptr<int16_t[]> destination_int(new int16_t[output_block_size]);
+  rtc::scoped_ptr<float[]> resampled_destination(new float[output_samples]);
+  rtc::scoped_ptr<float[]> pure_destination(new float[output_samples]);
+  rtc::scoped_ptr<float[]> source(new float[input_samples]);
+  rtc::scoped_ptr<int16_t[]> source_int(new int16_t[input_block_size]);
+  rtc::scoped_ptr<int16_t[]> destination_int(new int16_t[output_block_size]);
 
   // The sinc resampler has an implicit delay of approximately half the kernel
   // size at the input sample rate. By moving to a push model, this delay
diff --git a/webrtc/common_audio/resampler/sinc_resampler.h b/webrtc/common_audio/resampler/sinc_resampler.h
index d8ea6df72f..0980e2d756 100644
--- a/webrtc/common_audio/resampler/sinc_resampler.h
+++ b/webrtc/common_audio/resampler/sinc_resampler.h
@@ -14,10 +14,9 @@
 #ifndef WEBRTC_COMMON_AUDIO_RESAMPLER_SINC_RESAMPLER_H_
 #define WEBRTC_COMMON_AUDIO_RESAMPLER_SINC_RESAMPLER_H_
 
-#include <memory>
-
 #include "webrtc/base/constructormagic.h"
 #include "webrtc/base/gtest_prod_util.h"
+#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/system_wrappers/include/aligned_malloc.h"
 #include "webrtc/typedefs.h"
 
@@ -138,12 +137,12 @@ class SincResampler {
   // Contains kKernelOffsetCount kernels back-to-back, each of size kKernelSize.
   // The kernel offsets are sub-sample shifts of a windowed sinc shifted from
   // 0.0 to 1.0 sample.
-  std::unique_ptr<float[], AlignedFreeDeleter> kernel_storage_;
-  std::unique_ptr<float[], AlignedFreeDeleter> kernel_pre_sinc_storage_;
-  std::unique_ptr<float[], AlignedFreeDeleter> kernel_window_storage_;
+  rtc::scoped_ptr<float[], AlignedFreeDeleter> kernel_storage_;
+  rtc::scoped_ptr<float[], AlignedFreeDeleter> kernel_pre_sinc_storage_;
+  rtc::scoped_ptr<float[], AlignedFreeDeleter> kernel_window_storage_;
 
   // Data from the source is copied into this buffer for each processing pass.
-  std::unique_ptr<float[], AlignedFreeDeleter> input_buffer_;
+  rtc::scoped_ptr<float[], AlignedFreeDeleter> input_buffer_;
 
   // Stores the runtime selection of which Convolve function to use.
   // TODO(ajm): Move to using a global static which must only be initialized
diff --git a/webrtc/common_audio/resampler/sinc_resampler_unittest.cc b/webrtc/common_audio/resampler/sinc_resampler_unittest.cc
index 42172ebdda..b8d6c341a2 100644
--- a/webrtc/common_audio/resampler/sinc_resampler_unittest.cc
+++ b/webrtc/common_audio/resampler/sinc_resampler_unittest.cc
@@ -16,10 +16,9 @@
 
 #include <math.h>
 
-#include <memory>
-
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/common_audio/resampler/sinc_resampler.h"
 #include "webrtc/common_audio/resampler/sinusoidal_linear_chirp_source.h"
 #include "webrtc/system_wrappers/include/cpu_features_wrapper.h"
@@ -63,7 +62,7 @@ TEST(SincResamplerTest, ChunkedResample) {
 
   static const int kChunks = 2;
   size_t max_chunk_size = resampler.ChunkSize() * kChunks;
-  std::unique_ptr<float[]> resampled_destination(new float[max_chunk_size]);
+  rtc::scoped_ptr<float[]> resampled_destination(new float[max_chunk_size]);
 
   // Verify requesting ChunkSize() frames causes a single callback.
   EXPECT_CALL(mock_source, Run(_, _))
@@ -82,7 +81,7 @@ TEST(SincResamplerTest, Flush) {
   MockSource mock_source;
   SincResampler resampler(kSampleRateRatio, SincResampler::kDefaultRequestSize,
                           &mock_source);
-  std::unique_ptr<float[]> resampled_destination(
+  rtc::scoped_ptr<float[]> resampled_destination(
       new float[resampler.ChunkSize()]);
 
   // Fill the resampler with junk data.
@@ -270,7 +269,7 @@ TEST_P(SincResamplerTest, Resample) {
 
   // Force an update to the sample rate ratio to ensure dyanmic sample rate
   // changes are working correctly.
-  std::unique_ptr<float[]> kernel(new float[SincResampler::kKernelStorageSize]);
+  rtc::scoped_ptr<float[]> kernel(new float[SincResampler::kKernelStorageSize]);
   memcpy(kernel.get(), resampler.get_kernel_for_testing(),
          SincResampler::kKernelStorageSize);
   resampler.SetRatio(M_PI);
@@ -282,8 +281,8 @@ TEST_P(SincResamplerTest, Resample) {
 
   // TODO(dalecurtis): If we switch to AVX/SSE optimization, we'll need to
   // allocate these on 32-byte boundaries and ensure they're sized % 32 bytes.
-  std::unique_ptr<float[]> resampled_destination(new float[output_samples]);
-  std::unique_ptr<float[]> pure_destination(new float[output_samples]);
+  rtc::scoped_ptr<float[]> resampled_destination(new float[output_samples]);
+  rtc::scoped_ptr<float[]> pure_destination(new float[output_samples]);
 
   // Generate resampled signal.
   resampler.Resample(output_samples, resampled_destination.get());
diff --git a/webrtc/common_audio/ring_buffer_unittest.cc b/webrtc/common_audio/ring_buffer_unittest.cc
index 92c470a02d..f8cce74d9c 100644
--- a/webrtc/common_audio/ring_buffer_unittest.cc
+++ b/webrtc/common_audio/ring_buffer_unittest.cc
@@ -12,11 +12,10 @@
 
 #include <stdlib.h>
 #include <time.h>
-
 #include <algorithm>
-#include <memory>
 
 #include "testing/gtest/include/gtest/gtest.h"
+#include "webrtc/base/scoped_ptr.h"
 
 namespace webrtc {
 
@@ -25,7 +24,7 @@ struct FreeBufferDeleter {
     WebRtc_FreeBuffer(ptr);
   }
 };
-typedef std::unique_ptr<RingBuffer, FreeBufferDeleter> scoped_ring_buffer;
+typedef rtc::scoped_ptr<RingBuffer, FreeBufferDeleter> scoped_ring_buffer;
 
 static void AssertElementEq(int expected, int actual) {
   ASSERT_EQ(expected, actual);
@@ -59,8 +58,8 @@ static void RandomStressTest(int** data_ptr) {
   srand(seed);
   for (int i = 0; i < kNumTests; i++) {
     const int buffer_size = std::max(rand() % kMaxBufferSize, 1);
-    std::unique_ptr<int[]> write_data(new int[buffer_size]);
-    std::unique_ptr<int[]> read_data(new int[buffer_size]);
+    rtc::scoped_ptr<int[]> write_data(new int[buffer_size]);
+    rtc::scoped_ptr<int[]> read_data(new int[buffer_size]);
     scoped_ring_buffer buffer(WebRtc_CreateBuffer(buffer_size, sizeof(int)));
     ASSERT_TRUE(buffer.get() != NULL);
     WebRtc_InitBuffer(buffer.get());
diff --git a/webrtc/common_audio/sparse_fir_filter_unittest.cc b/webrtc/common_audio/sparse_fir_filter_unittest.cc
index 21b28ed34a..82a53a5287 100644
--- a/webrtc/common_audio/sparse_fir_filter_unittest.cc
+++ b/webrtc/common_audio/sparse_fir_filter_unittest.cc
@@ -8,12 +8,11 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include <memory>
-
 #include "webrtc/common_audio/sparse_fir_filter.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "webrtc/base/arraysize.h"
+#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/common_audio/fir_filter.h"
 
 namespace webrtc {
@@ -215,8 +214,9 @@ TEST(SparseFIRFilterTest, SameOutputAsFIRFilterWhenSparsityOneAndOffsetZero) {
   const size_t kOffset = 0;
   float output[arraysize(kInput)];
   float sparse_output[arraysize(kInput)];
-  std::unique_ptr<FIRFilter> filter(
-      FIRFilter::Create(kCoeffs, arraysize(kCoeffs), arraysize(kInput)));
+  rtc::scoped_ptr<FIRFilter> filter(FIRFilter::Create(kCoeffs,
+                                                      arraysize(kCoeffs),
+                                                      arraysize(kInput)));
   SparseFIRFilter sparse_filter(kCoeffs,
                                 arraysize(kCoeffs),
                                 kSparsity,
diff --git a/webrtc/modules/audio_processing/audio_processing_impl.cc b/webrtc/modules/audio_processing/audio_processing_impl.cc
index 7bb79e1714..bb746ee635 100644
--- a/webrtc/modules/audio_processing/audio_processing_impl.cc
+++ b/webrtc/modules/audio_processing/audio_processing_impl.cc
@@ -297,11 +297,11 @@ int AudioProcessingImpl::InitializeLocked() {
         formats_.rev_proc_format.num_channels(),
         rev_audio_buffer_out_num_frames));
     if (rev_conversion_needed()) {
-      render_.render_converter = AudioConverter::Create(
+      render_.render_converter = rtc::ScopedToUnique(AudioConverter::Create(
           formats_.api_format.reverse_input_stream().num_channels(),
           formats_.api_format.reverse_input_stream().num_frames(),
           formats_.api_format.reverse_output_stream().num_channels(),
-          formats_.api_format.reverse_output_stream().num_frames());
+          formats_.api_format.reverse_output_stream().num_frames()));
     } else {
       render_.render_converter.reset(nullptr);
     }
diff --git a/webrtc/modules/audio_processing/transient/transient_suppressor.cc b/webrtc/modules/audio_processing/transient/transient_suppressor.cc
index 46bb574c0b..25909b9008 100644
--- a/webrtc/modules/audio_processing/transient/transient_suppressor.cc
+++ b/webrtc/modules/audio_processing/transient/transient_suppressor.cc
@@ -17,7 +17,6 @@
 #include <deque>
 #include <set>
 
-#include "webrtc/base/checks.h"
 #include "webrtc/common_audio/fft4g.h"
 #include "webrtc/common_audio/include/audio_util.h"
 #include "webrtc/common_audio/signal_processing/include/signal_processing_library.h"
@@ -101,13 +100,13 @@ int TransientSuppressor::Initialize(int sample_rate_hz,
   detector_.reset(new TransientDetector(detection_rate_hz));
   data_length_ = sample_rate_hz * ts::kChunkSizeMs / 1000;
   if (data_length_ > analysis_length_) {
-    RTC_NOTREACHED();
+    assert(false);
     return -1;
   }
   buffer_delay_ = analysis_length_ - data_length_;
 
   complex_analysis_length_ = analysis_length_ / 2 + 1;
-  RTC_DCHECK_GE(complex_analysis_length_, kMaxVoiceBin);
+  assert(complex_analysis_length_ >= kMaxVoiceBin);
   num_channels_ = num_channels;
   in_buffer_.reset(new float[analysis_length_ * num_channels_]);
   memset(in_buffer_.get(),