Forward the number of skipped frames by the OS in audio playout.

media/audio/audio_output_device_unittest.cc

Index: media/audio/audio_output_device_unittest.cc
diff --git a/media/audio/audio_output_device_unittest.cc b/media/audio/audio_output_device_unittest.cc
index 1478e322448145ca3563ce2ab9590c528521f4c8..2f4fb0ceb9c8cf051e26b4a4566d9f1a15eb4d91 100644
--- a/media/audio/audio_output_device_unittest.cc
+++ b/media/audio/audio_output_device_unittest.cc
@@ -45,7 +45,10 @@ class MockRenderCallback : public AudioRendererSink::RenderCallback {
   MockRenderCallback() {}
   virtual ~MockRenderCallback() {}
 
-  MOCK_METHOD2(Render, int(AudioBus* dest, int audio_delay_milliseconds));
+  MOCK_METHOD3(Render,
+               int(AudioBus* dest,
+                   uint32_t audio_delay_milliseconds,
+                   uint32_t frames_skipped));
   MOCK_METHOD0(OnRenderError, void());
 };
 
@@ -215,10 +218,9 @@ void AudioOutputDeviceTest::ExpectRenderCallback() {
   // So, for the sake of this test, we consider the call to Render a sign
   // of success and quit the loop.
   const int kNumberOfFramesToProcess = 0;
-  EXPECT_CALL(callback_, Render(_, _))
-      .WillOnce(DoAll(
-          QuitLoop(io_loop_.task_runner()),
-          Return(kNumberOfFramesToProcess)));
+  EXPECT_CALL(callback_, Render(_, _, _))
+      .WillOnce(DoAll(QuitLoop(io_loop_.task_runner()),
+                      Return(kNumberOfFramesToProcess)));
 }
 
 void AudioOutputDeviceTest::WaitUntilRenderCallback() {