[WIP] Re-implement MediaControls in Blink-in-JS

Source/core/html/shadow/MediaControls.idl

Index: Source/core/html/shadow/MediaControls.idl
diff --git a/Source/core/html/shadow/MediaControls.idl b/Source/core/html/shadow/MediaControls.idl
new file mode 100644
index 0000000000000000000000000000000000000000..3cdc040b8cad456406d5b9bb22ecdb55cd6a31ec
--- /dev/null
+++ b/Source/core/html/shadow/MediaControls.idl
@@ -0,0 +1,10 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+interface MediaControls : HTMLDivElement {
+    [OnlyExposedToPrivateScript] boolean fullscreenIsSupported();
+
+    [ImplementedInPrivateScript, OnlyExposedToPrivateScript] void createdCallback(HTMLElement mediaElement);
+    [ImplementedInPrivateScript, OnlyExposedToPrivateScript] void reset();
+};