Adding nullability support to ImageBitmapRenderingContext.transferImageBitmap

third_party/WebKit/LayoutTests/fast/canvas/imagebitmap/transferFromImageBitmap.html

Index: third_party/WebKit/LayoutTests/fast/canvas/imagebitmap/transferFromImageBitmap.html
diff --git a/third_party/WebKit/LayoutTests/fast/canvas/imagebitmap/transferFromImageBitmap.html b/third_party/WebKit/LayoutTests/fast/canvas/imagebitmap/transferFromImageBitmap.html
index b4e1e5e1e0d36c77cc05d238fcd188698d79076e..f648079bcec4f36fb52c60bd8c6f172994befbf3 100644
--- a/third_party/WebKit/LayoutTests/fast/canvas/imagebitmap/transferFromImageBitmap.html
+++ b/third_party/WebKit/LayoutTests/fast/canvas/imagebitmap/transferFromImageBitmap.html
@@ -9,14 +9,21 @@ srcCanvas.width = srcCanvas.height = 100;
 var ctx = srcCanvas.getContext('2d');
 ctx.fillStyle = 'green';
 ctx.fillRect(0, 0, 100, 100);
-createImageBitmap(srcCanvas).then(consumeImageBitmap)
+createImageBitmap(srcCanvas).then(consumeImageBitmap);
+testImageBitmapNullability();
+if (window.testRunner)
+    testRunner.notifyDone();

[Justin Novosad, 2016/08/16 19:38:55]

This will cause the test to end before consumeImageBitmap is called.  Write a
separate standalone test for this

[zakerinasab, 2016/08/16 20:34:49]

Done.

 
 function consumeImageBitmap(image) {
     var dstCanvas = document.getElementById('dstCanvas');
     var dstCtx = dstCanvas.getContext('bitmaprenderer');
     dstCtx.transferFromImageBitmap(image);
-    if (window.testRunner) {
-        testRunner.notifyDone();
-    }
 }
-</script>
+
+function testImageBitmapNullability() {
+    var dstCanvas = document.getElementById('dstCanvas');
+    var dstCtx = dstCanvas.getContext('bitmaprenderer');
+    dstCtx.transferFromImageBitmap(null);
+}
+
+</script>