Modifies AudioInputCallback::OnData and use media::AudioBus instead of plain byte vector (Relanding)

content/browser/renderer_host/media/audio_input_renderer_host.cc

Index: content/browser/renderer_host/media/audio_input_renderer_host.cc
diff --git a/content/browser/renderer_host/media/audio_input_renderer_host.cc b/content/browser/renderer_host/media/audio_input_renderer_host.cc
index e5d4f78db9f03603f40dab0ff35695e98a1ddf3e..2dcc56d0918090e456ba0227cae5774e33bd947d 100644
--- a/content/browser/renderer_host/media/audio_input_renderer_host.cc
+++ b/content/browser/renderer_host/media/audio_input_renderer_host.cc
@@ -17,6 +17,7 @@
 #include "content/browser/renderer_host/media/audio_input_sync_writer.h"
 #include "content/browser/renderer_host/media/media_stream_manager.h"
 #include "media/audio/audio_manager_base.h"
+#include "media/base/audio_bus.h"
 
 namespace content {
 
@@ -113,8 +114,7 @@ void AudioInputRendererHost::OnError(media::AudioInputController* controller,
 }
 
 void AudioInputRendererHost::OnData(media::AudioInputController* controller,
-                                    const uint8* data,
-                                    uint32 size) {
+                                    const media::AudioBus* data) {
   NOTREACHED() << "Only low-latency mode is supported.";
 }
 
@@ -292,8 +292,9 @@ void AudioInputRendererHost::OnCreateStream(
   // Create a new AudioEntry structure.
   scoped_ptr<AudioEntry> entry(new AudioEntry());
 
-  const uint32 segment_size = (sizeof(media::AudioInputBufferParameters) +
-                               audio_params.GetBytesPerBuffer());
+  const uint32 segment_size =
+      (sizeof(media::AudioInputBufferParameters) +
+       media::AudioBus::CalculateMemorySize(audio_params));
   entry->shared_memory_segment_count = config.shared_memory_count;
 
   // Create the shared memory and share it with the renderer process
@@ -307,9 +308,8 @@ void AudioInputRendererHost::OnCreateStream(
     return;
   }
 
-  scoped_ptr<AudioInputSyncWriter> writer(
-      new AudioInputSyncWriter(&entry->shared_memory,
-                               entry->shared_memory_segment_count));
+  scoped_ptr<AudioInputSyncWriter> writer(new AudioInputSyncWriter(
+      &entry->shared_memory, entry->shared_memory_segment_count, audio_params));
 
   if (!writer->Init()) {
     SendErrorMessage(stream_id, SYNC_WRITER_INIT_FAILED);