[MediaSession] Add playbackState attribute to Blink MediaSession and use it to determine playback s…

third_party/WebKit/Source/modules/mediasession/MediaSession.idl

Index: third_party/WebKit/Source/modules/mediasession/MediaSession.idl
diff --git a/third_party/WebKit/Source/modules/mediasession/MediaSession.idl b/third_party/WebKit/Source/modules/mediasession/MediaSession.idl
index aacbeb4223e8f06a81ac835e35147b81c666e9f2..b9f27079c28cca18716cfe7a5caf765e702ada81 100644
--- a/third_party/WebKit/Source/modules/mediasession/MediaSession.idl
+++ b/third_party/WebKit/Source/modules/mediasession/MediaSession.idl
@@ -4,11 +4,19 @@
 
 // https://wicg.github.io/mediasession/#the-mediasession-interface

[mlamouri (slow - plz ping), 2016/12/16 15:49:14]

Can you put this above the actual interface and a link for the enum above the
enum?

[Zhiqiang Zhang (Slow), 2016/12/16 18:26:15]

Done.

 
+enum MediaSessionPlaybackState {
+  "none",
+  "paused",
+  "playing"
+};
+
 [
     RuntimeEnabled=MediaSession,
 ] interface MediaSession : EventTarget {
     attribute MediaMetadata? metadata;
 
+  attribute MediaSessionPlaybackState playbackState;
+
     attribute EventHandler onplay;
     attribute EventHandler onpause;
     attribute EventHandler onplaypause;