Make OffscreenCanvas resizeable

third_party/WebKit/Source/core/offscreencanvas/OffscreenCanvas.idl

Index: third_party/WebKit/Source/core/offscreencanvas/OffscreenCanvas.idl
diff --git a/third_party/WebKit/Source/core/offscreencanvas/OffscreenCanvas.idl b/third_party/WebKit/Source/core/offscreencanvas/OffscreenCanvas.idl
index 80c818118753db3368ac83352567e4f2ab02680c..c90f9e1bde71b228d34fee4f7aa4f1cb218da041 100644
--- a/third_party/WebKit/Source/core/offscreencanvas/OffscreenCanvas.idl
+++ b/third_party/WebKit/Source/core/offscreencanvas/OffscreenCanvas.idl
@@ -8,8 +8,8 @@
     RuntimeEnabled=ExperimentalCanvasFeatures,
     MeasureAs=OffscreenCanvas,
 ] interface OffscreenCanvas : EventTarget {
-    [RaisesException=Setter, EnforceRange] attribute unsigned long width;
-    [RaisesException=Setter, EnforceRange] attribute unsigned long height;
+    [EnforceRange] attribute unsigned long width;
+    [EnforceRange] attribute unsigned long height;
 
     [CallWith=ScriptState, RaisesException] ImageBitmap transferToImageBitmap();
     [RaisesException, CallWith=ScriptState] Promise<Blob> convertToBlob(optional ImageEncodeOptions options);