Implement ImageBitmapOptions resize

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 7511b30e3909957401b419099360b25114d6fa16..2647b3b31e9b2ab662d09933010f0ffcc62df91d 100644
--- a/third_party/WebKit/Source/core/html/HTMLImageElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLImageElement.cpp
@@ -687,14 +687,15 @@ void HTMLImageElement::forceReload() const
     imageLoader().updateFromElement(ImageLoader::UpdateForcedReload, m_referrerPolicy);
 }
 
-ScriptPromise HTMLImageElement::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, int sx, int sy, int sw, int sh, const ImageBitmapOptions& options, ExceptionState& exceptionState)
+ScriptPromise HTMLImageElement::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, Optional<IntRect> cropRect, const ImageBitmapOptions& options, ExceptionState& exceptionState)
 {
     ASSERT(eventTarget.toLocalDOMWindow());
-    if (!sw || !sh) {
-        exceptionState.throwDOMException(IndexSizeError, String::format("The source %s provided is 0.", sw ? "height" : "width"));
+    if ((cropRect && !ImageBitmap::isSourceSizeValid(cropRect->width(), cropRect->height(), exceptionState))
+        || !ImageBitmap::isSourceSizeValid(bitmapSourceSize().width(), bitmapSourceSize().height(), exceptionState))
         return ScriptPromise();
-    }
-    return ImageBitmapSource::fulfillImageBitmap(scriptState, ImageBitmap::create(this, IntRect(sx, sy, sw, sh), eventTarget.toLocalDOMWindow()->document(), options));
+    if (!ImageBitmap::isResizeOptionValid(options, exceptionState))
+        return ScriptPromise();
+    return ImageBitmapSource::fulfillImageBitmap(scriptState, ImageBitmap::create(this, cropRect, eventTarget.toLocalDOMWindow()->document(), options));
 }
 
 void HTMLImageElement::selectSourceURL(ImageLoader::UpdateFromElementBehavior behavior)