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

ppapi/shared_impl/ppb_audio_shared.cc

Index: ppapi/shared_impl/ppb_audio_shared.cc
diff --git a/ppapi/shared_impl/ppb_audio_shared.cc b/ppapi/shared_impl/ppb_audio_shared.cc
index 8747cc4adebdf04cdb851b32856f771ba01c4e28..cfa221729a7e5b46ec84e6d1bec0981268ca7f94 100644
--- a/ppapi/shared_impl/ppb_audio_shared.cc
+++ b/ppapi/shared_impl/ppb_audio_shared.cc
@@ -6,6 +6,7 @@
 
 #include "base/logging.h"
 #include "base/trace_event/trace_event.h"
+#include "media/audio/audio_parameters.h"
 #include "ppapi/nacl_irt/public/irt_ppapi.h"
 #include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/ppb_audio_config_shared.h"
@@ -112,8 +113,14 @@ void PPB_Audio_Shared::SetStreamInfo(
         std::string(),
         "Failed to map shared memory for PPB_Audio_Shared.");
   } else {
+    DCHECK_EQ(static_cast<size_t>(shared_memory_size_),

[bbudge, 2015/12/17 18:32:57]

nit: cast shouldn't be needed.

[Henrik Grunell, 2015/12/18 08:53:03]

Ah. Fixed.

+              sizeof(media::AudioOutputBufferParameters) +
+                  media::AudioBus::CalculateMemorySize(kAudioOutputChannels,
+                                                       sample_frame_count));
+    media::AudioOutputBuffer* buffer =
+        reinterpret_cast<media::AudioOutputBuffer*>(shared_memory_->memory());
     audio_bus_ = media::AudioBus::WrapMemory(
-        kAudioOutputChannels, sample_frame_count, shared_memory_->memory());
+        kAudioOutputChannels, sample_frame_count, buffer->audio);
     // Setup integer audio buffer for user audio data.
     client_buffer_size_bytes_ = audio_bus_->frames() * audio_bus_->channels() *
                                 kBitsPerAudioOutputSample / 8;