Adds volume level measurements to the AudioInputController for low-latency clients

content/browser/renderer_host/media/audio_input_renderer_host.h

Index: content/browser/renderer_host/media/audio_input_renderer_host.h
diff --git a/content/browser/renderer_host/media/audio_input_renderer_host.h b/content/browser/renderer_host/media/audio_input_renderer_host.h
index 93f92626dd8a5e3fce176aeb1ab138dac566f36b..75a78e8ad786495425c6e8eb6af4c16e8c9fb2a1 100644
--- a/content/browser/renderer_host/media/audio_input_renderer_host.h
+++ b/content/browser/renderer_host/media/audio_input_renderer_host.h
@@ -119,6 +119,8 @@ class CONTENT_EXPORT AudioInputRendererHost
   virtual void OnData(media::AudioInputController* controller,
                       const uint8* data,
                       uint32 size) OVERRIDE;
+  virtual void OnLog(media::AudioInputController* controller,
+                     const std::string& message) OVERRIDE;
 
  private:
   // TODO(henrika): extend test suite (compare AudioRenderHost)
@@ -166,6 +168,10 @@ class CONTENT_EXPORT AudioInputRendererHost
   void DoHandleError(media::AudioInputController* controller,
       media::AudioInputController::ErrorCode error_code);
 
+  // Log audio level of captured audio stream.
+  void DoLog(media::AudioInputController* controller,
+             const std::string& message);
+
   // Send an error message to the renderer.
   void SendErrorMessage(int stream_id, ErrorCode error_code);