Allowing renaming on DOM members on a per-method basis

tests/html/canvasrenderingcontext2d_test.dart

Index: tests/html/canvasrenderingcontext2d_test.dart
diff --git a/tests/html/canvasrenderingcontext2d_test.dart b/tests/html/canvasrenderingcontext2d_test.dart
index 4c32b8366ff6412a01a015bfc34c1f36a771a4b9..26be2f35ce7106ace1b9fa4467d87413c2a57545 100644
--- a/tests/html/canvasrenderingcontext2d_test.dart
+++ b/tests/html/canvasrenderingcontext2d_test.dart
@@ -530,5 +530,15 @@ main() {
       expectPixelUnfilled(0, 0);
       expectPixelUnfilled(80, 80);
     });
+
+    test('createImageData', () {
+      var imageData = context.createImageData(15, 15);
+      expect(imageData.width, 15);
+      expect(imageData.height, 15);
+
+      var other = context.createImageDataFromData(imageData);
+      expect(other.width, 15);
+      expect(other.height, 15);
+    });
   });
 }