Adds SVGImageElement as a CanvasImageSource

third_party/WebKit/Source/core/html/canvas/CanvasImageElementSource.h

Index: third_party/WebKit/Source/core/html/canvas/CanvasImageElementSource.h
diff --git a/third_party/WebKit/Source/core/html/canvas/CanvasImageElementSource.h b/third_party/WebKit/Source/core/html/canvas/CanvasImageElementSource.h
new file mode 100644
index 0000000000000000000000000000000000000000..e17a34d1f1ef8bc55df6c56effc85b8bd7daabba
--- /dev/null
+++ b/third_party/WebKit/Source/core/html/canvas/CanvasImageElementSource.h
@@ -0,0 +1,52 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CanvasImageElementSource_h
+#define CanvasImageElementSource_h
+
+#include "core/CoreExport.h"
+#include "core/html/canvas/CanvasImageSource.h"
+
+namespace blink {
+
+class Element;
+class ImageLoader;
+class ImageResourceContent;
+
+class CORE_EXPORT CanvasImageElementSource : public CanvasImageSource {
+ public:
+  virtual ImageLoader& imageLoader() const = 0;
+  virtual FloatSize sourceDefaultObjectSize() = 0;
+
+  PassRefPtr<Image> getSourceImageForCanvas(SourceImageStatus*,
+                                            AccelerationHint,
+                                            SnapshotReason,
+                                            const FloatSize&) const override;
+
+  bool wouldTaintOrigin(
+      SecurityOrigin* destinationSecurityOrigin) const override;
+
+  FloatSize elementSize(const FloatSize& defaultObjectSize) const override;
+  FloatSize defaultDestinationSize(
+      const FloatSize& defaultObjectSize) const override;
+
+  bool isAccelerated() const override;
+
+  int sourceWidth() override;
+  int sourceHeight() override;
+
+  bool isSVGSource() const override;
+
+  bool isOpaque() const override;
+
+  const KURL& sourceURL() const override;
+
+ private:
+  ImageResourceContent* cachedImage() const;
+  const Element& element() const;
+};
+
+}  // namespace blink
+
+#endif  // CanvasImageElementSource_h