diff --git a/talk/app/webrtc/videosourceinterface.h b/talk/app/webrtc/videosourceinterface.h
index e81142a20f..7ce0de8b71 100644
--- a/talk/app/webrtc/videosourceinterface.h
+++ b/talk/app/webrtc/videosourceinterface.h
@@ -49,27 +49,11 @@ class VideoSourceInterface : public MediaSourceInterface {
   virtual void Stop() = 0;
   virtual void Restart() = 0;
 
-  // TODO(nisse): Delete these backwards compatibility wrappers after
-  // chrome is updated. Needed now because chrome's MockVideoSource
-  // defines a method with this signature (and marked with override).
-  // In addition, we need a dummy default implementation for the new
-  // AddSink/RemoveSink methods below, because they're unimplemented
-  // in the same class. This is ugly, but for MockVideoSource it
-  // doesn't really matter what these methods do, because they're not
-  // used.
-  virtual void AddSink(cricket::VideoRenderer* output) {
-    AddSink(static_cast<rtc::VideoSinkInterface<cricket::VideoFrame>*>(output));
-  }
-  virtual void RemoveSink(cricket::VideoRenderer* output) {
-    RemoveSink(
-        static_cast<rtc::VideoSinkInterface<cricket::VideoFrame>*>(output));
-  }
-
   // Adds |output| to the source to receive frames.
-  // TODO(nisse): Delete dummy default implementation.
-  virtual void AddSink(rtc::VideoSinkInterface<cricket::VideoFrame>* output){};
+  virtual void AddSink(
+      rtc::VideoSinkInterface<cricket::VideoFrame>* output) = 0;
   virtual void RemoveSink(
-      rtc::VideoSinkInterface<cricket::VideoFrame>* output){};
+      rtc::VideoSinkInterface<cricket::VideoFrame>* output) = 0;
   virtual const cricket::VideoOptions* options() const = 0;
   virtual cricket::VideoRenderer* FrameInput() = 0;
 
diff --git a/talk/app/webrtc/videotrack_unittest.cc b/talk/app/webrtc/videotrack_unittest.cc
index fd7b87d30e..491c45bcaa 100644
--- a/talk/app/webrtc/videotrack_unittest.cc
+++ b/talk/app/webrtc/videotrack_unittest.cc
@@ -120,7 +120,7 @@ TEST_F(VideoTrackTest, DisableTrackBlackout) {
   ASSERT_FALSE(renderer_input == NULL);
 
   cricket::WebRtcVideoFrame frame;
-  frame.InitToBlack(100, 200, 1, 1, 0);
+  frame.InitToBlack(100, 200, 0);
   // Make it not all-black
   frame.GetUPlane()[0] = 0;
 
diff --git a/talk/media/base/videoframe.h b/talk/media/base/videoframe.h
index f7f7f0f5c8..aaa329a5fb 100644
--- a/talk/media/base/videoframe.h
+++ b/talk/media/base/videoframe.h
@@ -43,11 +43,6 @@ class VideoFrame {
 
   virtual bool InitToBlack(int w, int h, int64_t time_stamp) = 0;
 
-  // TODO(nisse): Old signature. Delete after chrome is updated.
-  virtual bool InitToBlack(int w, int h, size_t pixel_width,
-                           size_t pixel_height, int64_t time_stamp) {
-    return InitToBlack(w, h, time_stamp);
-  }
   // Creates a frame from a raw sample with FourCC |format| and size |w| x |h|.
   // |h| can be negative indicating a vertically flipped image.
   // |dw| is destination width; can be less than |w| if cropping is desired.
diff --git a/talk/media/webrtc/webrtcvideoframe.h b/talk/media/webrtc/webrtcvideoframe.h
index 715007f022..33d2873874 100644
--- a/talk/media/webrtc/webrtcvideoframe.h
+++ b/talk/media/webrtc/webrtcvideoframe.h
@@ -66,16 +66,7 @@ class WebRtcVideoFrame : public VideoFrame {
 
   void InitToEmptyBuffer(int w, int h, int64_t time_stamp_ns);
 
-  // TODO(nisse): Old signature. Delete after chrome is updated.
-  void InitToEmptyBuffer(int w, int h, size_t pixel_width, size_t pixel_height,
-                         int64_t time_stamp_ns) {
-    InitToEmptyBuffer(w, h, time_stamp_ns);
-  }
-
   bool InitToBlack(int w, int h, int64_t time_stamp_ns) override;
-  // Needed to inherit the InitToBlack wrapper method with 5
-  // arguments.
-  using VideoFrame::InitToBlack;
 
   // From base class VideoFrame.
   bool Reset(uint32_t format,