Integrate HTMLMediaElement with Web Audio API's MediaElementAudioSourceNode

content/renderer/media/audio_device.cc

Index: content/renderer/media/audio_device.cc
===================================================================
--- content/renderer/media/audio_device.cc	(revision 114311)
+++ content/renderer/media/audio_device.cc	(working copy)
@@ -60,6 +60,10 @@
   CHECK_EQ(0, stream_id_) <<
       "AudioDevice::Initialize() must be called before Start()";
 
+  DCHECK(!is_initialized_);
+  if (is_initialized_)
+    return;
+
   buffer_size_ = buffer_size;
   channels_ = channels;
   sample_rate_ = sample_rate;
@@ -79,10 +83,6 @@
   is_initialized_ = true;
 }
 
-bool AudioDevice::IsInitialized() {
-  return is_initialized_;
-}
-
 AudioDevice::~AudioDevice() {
   // The current design requires that the user calls Stop() before deleting
   // this class.