Audio related IPC messages and handlers from browser to renderer

chrome/renderer/media/audio_renderer_impl.cc

Index: chrome/renderer/media/audio_renderer_impl.cc
diff --git a/chrome/renderer/media/audio_renderer_impl.cc b/chrome/renderer/media/audio_renderer_impl.cc
index 113d700454515e2a3040b0557560617e3bb120b2..9dbd392f70c5f6e22ff35a21cbc99ddf0b1adc01 100644
--- a/chrome/renderer/media/audio_renderer_impl.cc
+++ b/chrome/renderer/media/audio_renderer_impl.cc
@@ -32,3 +32,21 @@ bool AudioRendererImpl::IsMediaFormatSupported(
   // TODO(hclam): check the format correct.
   return true;
 }
+
+void AudioRendererImpl::OnRequestPacket() {
+  // TODO(hclam): implement this.
+}
+
+void AudioRendererImpl::OnCreated(base::SharedMemoryHandle handle,
+                                  size_t length) {
+  // TODO(hclam): implement this.
+}
+
+void AudioRendererImpl::OnStateChanged(AudioOutputStream::State state,
+                                       int info) {
+  // TODO(hclam): implement this.
+}
+
+void AudioRendererImpl::OnVolume(double left, double right) {
+  // TODO(hclam): implement this.
+}