Add AAC codec specific data for MSE on android

media/mp4/aac.h

Index: media/mp4/aac.h
diff --git a/media/mp4/aac.h b/media/mp4/aac.h
index 2d4b6f45416d243ee853b169651e129b0a361611..1a546b743f79a2f1b56b72dd2705214874040527 100644
--- a/media/mp4/aac.h
+++ b/media/mp4/aac.h
@@ -52,6 +52,13 @@ class MEDIA_EXPORT AAC {
   // unchanged.
   bool ConvertEsdsToADTS(std::vector<uint8>* buffer) const;
 
+#if defined(OS_ANDROID)
+  // Returns the codec specific data needed by android MediaCodec.
+  std::vector<uint8> codec_specific_data() const {
+    return codec_specific_data_;
+  }
+#endif
+
   // Size in bytes of the ADTS header added by ConvertEsdsToADTS().
   static const size_t kADTSHeaderSize = 7;
 
@@ -66,6 +73,11 @@ class MEDIA_EXPORT AAC {
   uint8 frequency_index_;
   uint8 channel_config_;
 
+#if defined(OS_ANDROID)
+  // The codec specific data needed by the android MediaCodec.
+  std::vector<uint8> codec_specific_data_;
+#endif
+
   // The following variables store audio configuration information that
   // can be used by Chromium. They are based on the AAC specific
   // configuration but can be overridden by extensions in elementary