Use union type in ImageBitmapFactories.idl

The ImageBitmapFactories.idl should use typedef for its image source,
as specified in: https://html.spec.whatwg.org/#imagebitmapfactories.

In this CL, the CanvasRenderingContext2D is excluded in the ImageBitmapSource.

BUG=555958

Review URL: https://codereview.chromium.org/1455763002

Cr-Commit-Position: refs/heads/master@{#362048}

1 files changed, 0 insertions, 4 deletions

diff --git a/third_party/WebKit/LayoutTests/fast/canvas/canvas-createImageBitmap-invalid-args.html b/third_party/WebKit/LayoutTests/fast/canvas/canvas-createImageBitmap-invalid-args.html
index 57d20ea..af1488c 100644
--- a/third_party/WebKit/LayoutTests/fast/canvas/canvas-createImageBitmap-invalid-args.html
+++ b/third_party/WebKit/LayoutTests/fast/canvas/canvas-createImageBitmap-invalid-args.html
@@ -103,10 +103,6 @@ Promise.resolve().then(function() {
     });
 }).then(function() {
     return createCanvas().then(function(canvas) {
-        return checkInvalidRange(canvas.getContext('2d'), 'canvas context');
-    });
-}).then(function() {
-    return createCanvas().then(function(canvas) {
         var imagedata = canvas.getContext('2d').getImageData(0, 0, canvas.width, canvas.height);
         return checkInvalidRange(imagedata, 'canvas imagedata')
     });