Pass camera facing to WebKit

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 d9191b721badcf0e80afb731e5014a181312a689..1622bfc16f8cc2412ee405003258680be3c2843b 100644
--- a/third_party/WebKit/public/platform/WebMediaStreamTrack.h
+++ b/third_party/WebKit/public/platform/WebMediaStreamTrack.h
@@ -42,6 +42,7 @@ class WebString;
 class WebMediaStreamTrack {
  public:
   struct Settings {
+    enum VideoFacingMode { User, Environment, Left, Right };
     bool hasFrameRate() { return frameRate >= 0.0; }
     bool hasWidth() { return width >= 0; }
     bool hasHeight() { return height >= 0; }
@@ -51,6 +52,7 @@ class WebMediaStreamTrack {
     long width = -1;
     long height = -1;
     WebString deviceId;
+    VideoFacingMode facingMode = VideoFacingMode::User;

[mcasas, 2017/01/05 20:26:37]

WebMediaStreamTrack applies to non-video tracks
(currently only audio), so there should be some
kind of FacingMode "none" or "unknown", but there 
isn't such thing in the spec [1], so please make a
Spec bug for it and link it here as TODO.

Perhaps also remove the "Video" from it, since 
we could have microphones orientations, right?


[1] https://www.w3.org/TR/mediacapture-streams/#def-constraint-facingMode

[shenghao, 2017/01/06 09:43:01]

Done.

   };
 
   class TrackData {