1 files changed, 7 insertions, 7 deletions
diff --git a/components/script_bindings/webidls/CanvasRenderingContext2D.webidl b/components/script_bindings/webidls/CanvasRenderingContext2D.webidl
index f47de4efd29..0c4960fe6ad 100644
--- a/components/script_bindings/webidls/CanvasRenderingContext2D.webidl
+++ b/components/script_bindings/webidls/CanvasRenderingContext2D.webidl
@@ -165,16 +165,16 @@ interface mixin CanvasDrawImage {
 interface mixin CanvasImageData {
   // pixel manipulation
   [Throws]
-  ImageData createImageData(long sw, long sh);
+  ImageData createImageData([EnforceRange] long sw, [EnforceRange] long sh);
   [Throws]
   ImageData createImageData(ImageData imagedata);
   [Throws]
-  ImageData getImageData(long sx, long sy, long sw, long sh);
-  undefined putImageData(ImageData imagedata, long dx, long dy);
-  undefined putImageData(ImageData imagedata,
-                    long dx, long dy,
-                    long dirtyX, long dirtyY,
-                    long dirtyWidth, long dirtyHeight);
+  ImageData getImageData([EnforceRange] long sx, [EnforceRange] long sy,
+                         [EnforceRange] long sw, [EnforceRange] long sh);
+  undefined putImageData(ImageData imagedata, [EnforceRange] long dx, [EnforceRange] long dy);
+  undefined putImageData(ImageData imagedata, [EnforceRange] long dx, [EnforceRange] long dy,
+                         [EnforceRange] long dirtyX, [EnforceRange] long dirtyY,
+                         [EnforceRange] long dirtyWidth, [EnforceRange] long dirtyHeight);
 };
 
 enum CanvasLineCap { "butt", "round", "square" };