MediaStreamTrack: Add echo-cancellation and device-id to getSettings

third_party/WebKit/Source/platform/mediastream/MediaStreamSource.h

Index: third_party/WebKit/Source/platform/mediastream/MediaStreamSource.h
diff --git a/third_party/WebKit/Source/platform/mediastream/MediaStreamSource.h b/third_party/WebKit/Source/platform/mediastream/MediaStreamSource.h
index ea1069e3666639965e1d39bd57b65da74e279c8a..58290e6d8bf86a59e550bd1faad795823a731f58 100644
--- a/third_party/WebKit/Source/platform/mediastream/MediaStreamSource.h
+++ b/third_party/WebKit/Source/platform/mediastream/MediaStreamSource.h
@@ -35,6 +35,7 @@
 #include "platform/PlatformExport.h"
 #include "platform/audio/AudioDestinationConsumer.h"
 #include "public/platform/WebMediaConstraints.h"
+#include "public/platform/WebMediaStreamTrack.h"
 #include "wtf/Allocator.h"
 #include "wtf/ThreadingPrimitives.h"
 #include "wtf/Vector.h"
@@ -57,6 +58,7 @@ class PLATFORM_EXPORT MediaStreamSource final
 
    public:
     virtual ~ExtraData() {}
+    virtual void getSettings(WebMediaStreamTrack::Settings&) = 0;
   };
 
   enum StreamType { TypeAudio, TypeVideo };
@@ -93,6 +95,7 @@ class PLATFORM_EXPORT MediaStreamSource final
     m_constraints = constraints;
   }
   WebMediaConstraints constraints() { return m_constraints; }
+  void getSettings(WebMediaStreamTrack::Settings&);
 
   void setAudioFormat(size_t numberOfChannels, float sampleRate);
   void consumeAudio(AudioBus*, size_t numberOfFrames);