Implement MediaMetadata artwork in Blink

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

Index: third_party/WebKit/Source/modules/mediasession/MediaArtworkInit.idl
diff --git a/content/test/data/service_worker/fetch_event_respond_with_fetch.js b/third_party/WebKit/Source/modules/mediasession/MediaArtworkInit.idl
similarity index 63%
copy from content/test/data/service_worker/fetch_event_respond_with_fetch.js
copy to third_party/WebKit/Source/modules/mediasession/MediaArtworkInit.idl
index df76d0a094fd0d876c78cc9f327df6e213e056c2..6ea3a32b57f322da77560ab6b4d15470e4f3c2b5 100644
--- a/content/test/data/service_worker/fetch_event_respond_with_fetch.js
+++ b/third_party/WebKit/Source/modules/mediasession/MediaArtworkInit.idl
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-this.onfetch = function(event) {
-  event.respondWith(fetch(event.request));

[mlamouri (slow - plz ping), 2016/05/31 16:41:50]

to avoid the fake copy, you can pass --no-find-copies to git cl upload.

[Zhiqiang Zhang (Slow), 2016/06/01 19:40:57]

Done.

+dictionary MediaArtworkInit {
+  DOMString src = "";
+  DOMString sizes = "";
+  DOMString type = "";
 };