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

Source/core/html/HTMLVideoElement.idl

Index: Source/core/html/HTMLVideoElement.idl
diff --git a/Source/core/html/HTMLVideoElement.idl b/Source/core/html/HTMLVideoElement.idl
index 04f6d1bcb955134a617b0eb256cf126138225410..38504af25df74c71f8b8c177577125f0043c3dff 100644
--- a/Source/core/html/HTMLVideoElement.idl
+++ b/Source/core/html/HTMLVideoElement.idl
@@ -26,10 +26,13 @@
 [
     RuntimeEnabled=Media
 ] interface HTMLVideoElement : HTMLMediaElement {
+    //[ImplementedInPrivateScript, Reflect] attribute unsigned long width;
+    //[ImplementedInPrivateScript, Reflect] attribute unsigned long height;
     [Reflect] attribute unsigned long width;
     [Reflect] attribute unsigned long height;
     readonly attribute unsigned long videoWidth;
     readonly attribute unsigned long videoHeight;
+    //[ImplementedInPrivateScript, Reflect, URL] attribute DOMString poster;
     [Reflect, URL] attribute DOMString poster;
 
     [RuntimeEnabled=PrefixedVideoFullscreen, DeprecateAs=PrefixedVideoSupportsFullscreen] readonly attribute boolean webkitSupportsFullscreen;