Add speaker on/off control on Android for WebRTC

content/test/webrtc_audio_device_test.cc

Index: content/test/webrtc_audio_device_test.cc
===================================================================
--- content/test/webrtc_audio_device_test.cc	(revision 189965)
+++ content/test/webrtc_audio_device_test.cc	(working copy)
@@ -42,6 +42,11 @@
 #include "base/win/scoped_com_initializer.h"
 #endif
 
+#if defined(OS_ANDROID)
+#include "base/android/jni_android.h"
+#include "media/audio/audio_manager_base.h"
+#endif
+
 using media::AudioParameters;
 using media::ChannelLayout;
 using testing::_;
@@ -128,6 +133,11 @@
 WebRTCAudioDeviceTest::~WebRTCAudioDeviceTest() {}
 
 void WebRTCAudioDeviceTest::SetUp() {
+#if defined(OS_ANDROID)
+    media::AudioManagerBase::RegisterAudioManager(
+        base::android::AttachCurrentThread());
+#endif
+
   // This part sets up a RenderThread environment to ensure that
   // RenderThread::current() (<=> TLS pointer) is valid.
   // Main parts are inspired by the RenderViewFakeResourcesTest.