Add CanvasSurfaceLayerBridge

third_party/WebKit/Source/platform/graphics/CanvasSurfaceLayerBridge.h

+// Copyright 2016 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 CanvasSurfaceLayerBridge_h
+#define CanvasSurfaceLayerBridge_h
+
+#include "base/memory/ref_counted.h"
+#include "platform/PlatformExport.h"
+#include "wtf/OwnPtr.h"
+
+namespace cc {
+// TODO(611796): replace SolidColorLayer with SurfaceLayer
+class SolidColorLayer;
+}
+
+namespace blink {
+
+class WebLayer;
+
+class PLATFORM_EXPORT CanvasSurfaceLayerBridge {
+public:
+    explicit CanvasSurfaceLayerBridge();
+    ~CanvasSurfaceLayerBridge();
+    WebLayer* getWebLayer() const { return m_webLayer.get(); }
+
+private:
+    scoped_refptr<cc::SolidColorLayer> m_solidColorLayer;
+    OwnPtr<WebLayer> m_webLayer;
+};
+
+}
+
+#endif // CanvasSurfaceLayerBridge