Support canvas size as default object size

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

Index: third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp b/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp
index 407d7d15b9b06ff33068c6121bf0b2e457ba75ce..dc94b610b133ae38b9d0392604e8edb8fe37ac69 100644
--- a/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp
@@ -424,7 +424,7 @@ void HTMLCanvasElement::notifyListenersCanvasChanged()
 
     if (listenerNeedsNewFrameCapture) {
         SourceImageStatus status;
-        RefPtr<Image> sourceImage = getSourceImageForCanvas(&status, PreferNoAcceleration, SnapshotReasonCanvasListenerCapture);
+        RefPtr<Image> sourceImage = getSourceImageForCanvas(&status, PreferNoAcceleration, SnapshotReasonCanvasListenerCapture, FloatSize());
         if (status != NormalSourceImageStatus)
             return;
         RefPtr<SkImage> image = sourceImage->imageForCurrentFrame();
@@ -969,7 +969,7 @@ void HTMLCanvasElement::didMoveToNewDocument(Document& oldDocument)
     HTMLElement::didMoveToNewDocument(oldDocument);
 }
 
-PassRefPtr<Image> HTMLCanvasElement::getSourceImageForCanvas(SourceImageStatus* status, AccelerationHint hint, SnapshotReason reason) const
+PassRefPtr<Image> HTMLCanvasElement::getSourceImageForCanvas(SourceImageStatus* status, AccelerationHint hint, SnapshotReason reason, const FloatSize&) const
 {
     if (!width() || !height()) {
         *status = ZeroSizeCanvasSourceImageStatus;
@@ -1005,7 +1005,7 @@ bool HTMLCanvasElement::wouldTaintOrigin(SecurityOrigin*) const
     return !originClean();
 }
 
-FloatSize HTMLCanvasElement::elementSize() const
+FloatSize HTMLCanvasElement::elementSize(const FloatSize&) const
 {
     return FloatSize(width(), height());
 }