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

media/audio/audio_output_controller_unittest.cc

Index: media/audio/audio_output_controller_unittest.cc
diff --git a/media/audio/audio_output_controller_unittest.cc b/media/audio/audio_output_controller_unittest.cc
index b68dea2b60b488dd96ba99a44386b6b2d6749c2d..9addca8a465552d04b3ef5a07aed966501d01ec5 100644
--- a/media/audio/audio_output_controller_unittest.cc
+++ b/media/audio/audio_output_controller_unittest.cc
@@ -51,7 +51,8 @@ class MockAudioOutputControllerSyncReader
  public:
   MockAudioOutputControllerSyncReader() {}
 
-  MOCK_METHOD1(UpdatePendingBytes, void(uint32 bytes));
+  MOCK_METHOD2(UpdatePendingBytes,
+               void(uint32_t bytes, uint32_t frames_skipped));
   MOCK_METHOD1(Read, void(AudioBus* dest));
   MOCK_METHOD0(Close, void());
 
@@ -132,8 +133,7 @@ class AudioOutputControllerTest : public testing::Test {
 
     // During playback, the mock pretends to provide audio data rendered and
     // sent from the render process.
-    EXPECT_CALL(mock_sync_reader_, UpdatePendingBytes(_))
-        .Times(AtLeast(1));
+    EXPECT_CALL(mock_sync_reader_, UpdatePendingBytes(_, _)).Times(AtLeast(1));
     EXPECT_CALL(mock_sync_reader_, Read(_))
         .WillRepeatedly(DoAll(PopulateBuffer(),
                               SignalEvent(&read_event_)));
@@ -190,7 +190,7 @@ class AudioOutputControllerTest : public testing::Test {
     scoped_ptr<AudioBus> dest = AudioBus::Create(params_);
     ASSERT_TRUE(mock_stream_.callback());
     const int frames_read =
-        mock_stream_.callback()->OnMoreData(dest.get(), 0);
+        mock_stream_.callback()->OnMoreData(dest.get(), 0, 0);
     EXPECT_LT(0, frames_read);
     EXPECT_EQ(kBufferNonZeroData, dest->channel(0)[0]);
   }