Basic use implementation for MediaStream from Canvas: captureStream()

third_party/WebKit/Source/modules/mediacapturefromelement/HTMLCanvasElementCapture.h

Index: third_party/WebKit/Source/modules/mediacapturefromelement/HTMLCanvasElementCapture.h
diff --git a/third_party/WebKit/Source/modules/mediacapturefromelement/HTMLCanvasElementCapture.h b/third_party/WebKit/Source/modules/mediacapturefromelement/HTMLCanvasElementCapture.h
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index 0000000000000000000000000000000000000000..08f8dde2bd15ba3e68d95ac77c19b734363e4fcf
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+++ b/third_party/WebKit/Source/modules/mediacapturefromelement/HTMLCanvasElementCapture.h
@@ -0,0 +1,26 @@
+// 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 HTMLCanvasElementCapture_h
+#define HTMLCanvasElementCapture_h
+
+#include "core/html/HTMLCanvasElement.h"
+#include "platform/heap/Handle.h"
+#include "wtf/Allocator.h"
+
+namespace blink {
+
+class CanvasCaptureMediaStream;
+class ExceptionState;
+
+class HTMLCanvasElementCapture : public NoBaseWillBeGarbageCollectedFinalized<HTMLCanvasElementCapture>, public HTMLCanvasElement {
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(HTMLCanvasElementCapture);
+public:
+    static CanvasCaptureMediaStream* captureStream(HTMLCanvasElement&, ExceptionState&);
+    DEFINE_INLINE_VIRTUAL_TRACE() { HTMLCanvasElement::trace(visitor); };
+};
+
+} // namespace blink
+
+#endif