Start an empty interface OffScreenCanvas

third_party/WebKit/Source/modules/canvas2d/WebGLRenderingContextBaseOffScreenCanvas.h

Index: third_party/WebKit/Source/modules/canvas2d/WebGLRenderingContextBaseOffScreenCanvas.h
diff --git a/third_party/WebKit/Source/modules/canvas2d/WebGLRenderingContextBaseOffScreenCanvas.h b/third_party/WebKit/Source/modules/canvas2d/WebGLRenderingContextBaseOffScreenCanvas.h
new file mode 100644
index 0000000000000000000000000000000000000000..a6d9eb9a09e40c6b9ff2ca61d4c4bfdd28771e9e
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+++ b/third_party/WebKit/Source/modules/canvas2d/WebGLRenderingContextBaseOffScreenCanvas.h
@@ -0,0 +1,24 @@
+// Copyright 2015 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 WebGLRenderingContextBaseOffScreenCanvas_h
+#define WebGLRenderingContextBaseOffScreenCanvas_h
+
+#include "bindings/modules/v8/UnionTypesModules.h"
+#include "wtf/Allocator.h"
+
+namespace blink {
+
+class WebGLRenderingContextBase;
+
+class WebGLRenderingContextBaseOffScreenCanvas {
+    STATIC_ONLY(WebGLRenderingContextBaseOffScreenCanvas);
+public:
+    static void canvas(WebGLRenderingContextBase&, HTMLCanvasElementOrOffScreenCanvas&);
+    static void commit(WebGLRenderingContextBase&);
+};
+
+} // namespace blink
+
+#endif // CanvasRenderingContext2DOffScreenCanvas_h