Support Opus Ambisonics playback

media/base/output_device_info.h

Index: media/base/output_device_info.h
diff --git a/media/base/output_device_info.h b/media/base/output_device_info.h
index 96469d556bb19e07d3bd7002daa17b8832a96bf1..d8ed61655b495bfdc902910d4dc64be512f294c3 100644
--- a/media/base/output_device_info.h
+++ b/media/base/output_device_info.h
@@ -48,6 +48,8 @@ class MEDIA_EXPORT OutputDeviceInfo {
 
   ~OutputDeviceInfo();
 
+  void SetIsWebAudioSource(bool value);

[DaleCurtis, 2017/04/06 19:44:42]

Sorry skimmed review due to time yesterday. I see you're now doing what I
thought you were. I don't think we need this though. Shouldn't it be enough to
receive DISCRETE layout from WebAudio?

[flim-chromium, 2017/04/07 22:01:43]

That makes sense, done.

+
   // Returns the device ID.
   const std::string& device_id() const { return device_id_; }
 
@@ -59,6 +61,9 @@ class MEDIA_EXPORT OutputDeviceInfo {
   // device_status()) is different from OUTPUT_DEVICE_STATUS_OK.
   const AudioParameters& output_params() const { return output_params_; };
 
+  // Returns whether a webaudio source is attached to the HTML media element.
+  bool is_webaudio_source() const { return is_webaudio_source_; };
+
   // Returns a human-readable string describing |*this|.  For debugging & test
   // output only.
   std::string AsHumanReadableString() const;
@@ -67,6 +72,7 @@ class MEDIA_EXPORT OutputDeviceInfo {
   std::string device_id_;
   OutputDeviceStatus device_status_;
   AudioParameters output_params_;
+  bool is_webaudio_source_;
 };
 
 }  // namespace media