Implement MediaStreamTrack.getConstraints

third_party/WebKit/Source/modules/mediastream/MediaStreamTrack.h

Index: third_party/WebKit/Source/modules/mediastream/MediaStreamTrack.h
diff --git a/third_party/WebKit/Source/modules/mediastream/MediaStreamTrack.h b/third_party/WebKit/Source/modules/mediastream/MediaStreamTrack.h
index 0cad160d2943ac0d76559645f2e8a9caab439d4a..c1f3f3e35d0b78cace1d447485fb42ae9f9eba18 100644
--- a/third_party/WebKit/Source/modules/mediastream/MediaStreamTrack.h
+++ b/third_party/WebKit/Source/modules/mediastream/MediaStreamTrack.h
@@ -33,13 +33,14 @@
 #include "modules/mediastream/SourceInfo.h"
 #include "platform/mediastream/MediaStreamDescriptor.h"
 #include "platform/mediastream/MediaStreamSource.h"
+#include "public/platform/WebMediaConstraints.h"
 #include "wtf/Forward.h"
 
 namespace blink {
 
 class AudioSourceProvider;
 class ExceptionState;
-class MediaStreamComponent;
+class MediaTrackConstraints;
 class MediaStreamTrackSourcesCallback;
 
 class MODULES_EXPORT MediaStreamTrack
@@ -70,6 +71,11 @@ public:
     void stopTrack(ExceptionState&);
     virtual MediaStreamTrack* clone(ExecutionContext*);
 
+    void getConstraints(MediaTrackConstraints&);
+
+    // Internal

[Peter Beverloo, 2016/04/21 14:11:46]

I see that this has to be exposed because UserMediaRequest uses it, but would
you please document what appropriate usage is rather than noting that it's
internal? (Which visibility already dictates it's not.)

[hta - Chromium, 2016/04/24 09:58:26]

More explanation added. There will be an applyConstraints call here eventually
too, which is IDL-exposed.

+    void setConstraints(const WebMediaConstraints&);
+
     DEFINE_ATTRIBUTE_EVENT_LISTENER(mute);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(unmute);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(ended);
@@ -109,6 +115,7 @@ private:
     bool m_isIteratingRegisteredMediaStreams;
     bool m_stopped;
     Member<MediaStreamComponent> m_component;
+    WebMediaConstraints m_constraints;
 };
 
 typedef HeapVector<Member<MediaStreamTrack>> MediaStreamTrackVector;