Move helpers_ios.cc/.h

- Out from modules/utility/ and into modules/audio_device/ios/ - there they are used.

BUG=none

Review-Url: https://codereview.webrtc.org/2526273002
Cr-Commit-Position: refs/heads/master@{#15236}

webrtc/modules/audio_device/BUILD.gn

@@ -184,6 +184,8 @@ rtc_static_library("audio_device") {
           "ios/audio_device_ios.mm",
           "ios/audio_device_not_implemented_ios.mm",
           "ios/audio_session_observer.h",
+          "ios/helpers_ios.h",
+          "ios/helpers_ios.mm",
           "ios/objc/RTCAudioSession+Configuration.mm",
           "ios/objc/RTCAudioSession+Private.h",
           "ios/objc/RTCAudioSession.h",

webrtc/modules/audio_device/ios/audio_device_ios.mm

@@ -25,7 +25,7 @@
 #include "webrtc/base/thread.h"
 #include "webrtc/base/thread_annotations.h"
 #include "webrtc/modules/audio_device/fine_audio_buffer.h"
-#include "webrtc/modules/utility/include/helpers_ios.h"
+#include "webrtc/modules/audio_device/ios/helpers_ios.h"
 
 #import "WebRTC/RTCLogging.h"
 #import "webrtc/modules/audio_device/ios/objc/RTCAudioSession.h"

webrtc/modules/audio_device/ios/helpers_ios.h

@@ -8,8 +8,8 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#ifndef WEBRTC_MODULES_UTILITY_INCLUDE_HELPERS_IOS_H_
-#define WEBRTC_MODULES_UTILITY_INCLUDE_HELPERS_IOS_H_
+#ifndef WEBRTC_MODULES_AUDIO_DEVICE_IOS_HELPERS_IOS_H_
+#define WEBRTC_MODULES_AUDIO_DEVICE_IOS_HELPERS_IOS_H_
 
 #if defined(WEBRTC_IOS)
 
@@ -74,4 +74,4 @@ bool GetLowPowerModeEnabled();
 
 #endif  // defined(WEBRTC_IOS)
 
-#endif  // WEBRTC_MODULES_UTILITY_INCLUDE_HELPERS_IOS_H_
+#endif  // WEBRTC_MODULES_AUDIO_DEVICE_IOS_HELPERS_IOS_H_

webrtc/modules/audio_device/ios/helpers_ios.mm

@@ -19,7 +19,7 @@
 
 #include "webrtc/base/checks.h"
 #include "webrtc/base/logging.h"
-#include "webrtc/modules/utility/include/helpers_ios.h"
+#include "webrtc/modules/audio_device/ios/helpers_ios.h"
 
 namespace webrtc {
 namespace ios {

webrtc/modules/audio_device/test/audio_device_test_api.cc

@@ -21,6 +21,7 @@
 
 #include "webrtc/modules/audio_device/audio_device_config.h"
 #include "webrtc/modules/audio_device/audio_device_impl.h"
+#include "webrtc/modules/utility/include/process_thread.h"
 #include "webrtc/system_wrappers/include/sleep.h"
 
 // Helper functions

webrtc/modules/audio_device/test/audio_device_test_defines.h

@@ -13,7 +13,6 @@
 
 #include "webrtc/common_types.h"
 #include "webrtc/modules/audio_device/include/audio_device.h"
-#include "webrtc/modules/utility/include/process_thread.h"
 #include "webrtc/system_wrappers/include/trace.h"
 
 #ifdef _WIN32

webrtc/modules/utility/BUILD.gn

@@ -22,7 +22,6 @@ rtc_static_library("utility") {
     "source/file_player.cc",
     "source/file_recorder.cc",
     "source/helpers_android.cc",
-    "source/helpers_ios.mm",
     "source/jvm_android.cc",
     "source/process_thread_impl.cc",
     "source/process_thread_impl.h",