Implement MediaStreamTrack contentHint skeleton.

third_party/WebKit/public/platform/WebMediaStreamTrack.h

Index: third_party/WebKit/public/platform/WebMediaStreamTrack.h
diff --git a/third_party/WebKit/public/platform/WebMediaStreamTrack.h b/third_party/WebKit/public/platform/WebMediaStreamTrack.h
index d67453bccaae29ddf91810880cb27bf326edc837..61769ec26566d3fd31993513b82d7891f6c1119d 100644
--- a/third_party/WebKit/public/platform/WebMediaStreamTrack.h
+++ b/third_party/WebKit/public/platform/WebMediaStreamTrack.h
@@ -60,6 +60,14 @@ class WebMediaStreamTrack {
     virtual void getSettings(Settings&) = 0;
   };
 
+  enum class ContentHint {
+    None,
+    AudioSpeech,
+    AudioMusic,
+    VideoFluid,
+    VideoDetailed
+  };
+
   WebMediaStreamTrack() {}
   WebMediaStreamTrack(const WebMediaStreamTrack& other) { assign(other); }
   ~WebMediaStreamTrack() { reset(); }
@@ -82,6 +90,7 @@ class WebMediaStreamTrack {
   BLINK_PLATFORM_EXPORT WebMediaStreamSource source() const;
   BLINK_PLATFORM_EXPORT bool isEnabled() const;
   BLINK_PLATFORM_EXPORT bool isMuted() const;
+  BLINK_PLATFORM_EXPORT ContentHint contentHint() const;

[esprehn, 2016/12/13 18:24:25]

Due to the big blink rename this will need to become GetContentHint() or you
need to rename the type ContentHintType.

[pbos, 2016/12/13 19:11:06]

Done (->ContentHintType).

 
   // Extra data associated with this WebMediaStream.
   // If non-null, the extra data pointer will be deleted when the object is