Prototype HTMLVideoElement properties for WebGL texImage2D

third_party/WebKit/Source/core/html/HTMLVideoElement.idl

Index: third_party/WebKit/Source/core/html/HTMLVideoElement.idl
diff --git a/third_party/WebKit/Source/core/html/HTMLVideoElement.idl b/third_party/WebKit/Source/core/html/HTMLVideoElement.idl
index be1a4345a767d94dabbf9c72cfae3eecf034662a..06528a6581a862fc3aaa7f5b3e4bf91dbf38308f 100644
--- a/third_party/WebKit/Source/core/html/HTMLVideoElement.idl
+++ b/third_party/WebKit/Source/core/html/HTMLVideoElement.idl
@@ -50,4 +50,8 @@ interface HTMLVideoElement : HTMLMediaElement {
     // The number of decoded frames that have been dropped by the player
     // for performance reasons during playback.
     [MeasureAs=PrefixedVideoDroppedFrameCount] readonly attribute unsigned long webkitDroppedFrameCount;
+
+    [RuntimeEnabled=ExperimentalCanvasFeatures] readonly attribute unsigned long webglLastUploadedWidth;
+    [RuntimeEnabled=ExperimentalCanvasFeatures] readonly attribute unsigned long webglLastUploadedHeight;
+    [RuntimeEnabled=ExperimentalCanvasFeatures] readonly attribute double webglLastUploadedTimestamp;
 };