Support createImageBitmap from a SVG image

third_party/WebKit/Source/core/html/HTMLImageElement.cpp

Index: third_party/WebKit/Source/core/html/HTMLImageElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLImageElement.cpp b/third_party/WebKit/Source/core/html/HTMLImageElement.cpp
index f389f1c896feb67db1e795a1258b107e610022bf..de143f1deff263aece4b8f4924a22e614cd2a338 100644
--- a/third_party/WebKit/Source/core/html/HTMLImageElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLImageElement.cpp
@@ -690,8 +690,11 @@ ScriptPromise HTMLImageElement::createImageBitmap(ScriptState* scriptState, Even
         return ScriptPromise();
     }
     if (cachedImage()->getImage()->isSVGImage()) {
-        exceptionState.throwDOMException(InvalidStateError, "The image element contains an SVG image, which is unsupported.");
-        return ScriptPromise();
+        SVGImage* image = static_cast<SVGImage*>(cachedImage()->getImage());

[jbroman, 2016/04/13 21:13:22]

Prefer using toSVGImage:

SVGImage* image = toSVGImage(cachedImage()->getImage());

[xidachen, 2016/04/14 01:12:39]

Done.

+        if (!image->hasIntrinsicSize()) {
+            exceptionState.throwDOMException(InvalidStateError, "The image element is an SVG image without intrinsic size.");

[jbroman, 2016/04/13 21:13:22]

nit: technically the image element isn't an SVG image, it contains one. Please
change "is" back to "contains".

[xidachen, 2016/04/14 01:12:39]

Done.

+            return ScriptPromise();
+        }
     }
     if (!sw || !sh) {
         exceptionState.throwDOMException(IndexSizeError, String::format("The source %s provided is 0.", sw ? "height" : "width"));