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..e2880f904591b01db741933a5336ac579574c0bc 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 = toSVGImage(cachedImage()->getImage());
+        if (!image->hasIntrinsicDimensions()) {
+            exceptionState.throwDOMException(InvalidStateError, "The image element contains an SVG image without intrinsic size.");

[davve, 2016/04/15 12:34:12]

nit: To align with the specification, you might want to word this with
"intrinsic dimensions" instead of "intrinsic size".

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