Basic use implementation for MediaStream from Canvas: captureStream()

third_party/WebKit/Source/modules/mediacapturefromelement/AutoCanvasDrawListener.cpp

Index: third_party/WebKit/Source/modules/mediacapturefromelement/AutoCanvasDrawListener.cpp
diff --git a/third_party/WebKit/Source/modules/mediacapturefromelement/AutoCanvasDrawListener.cpp b/third_party/WebKit/Source/modules/mediacapturefromelement/AutoCanvasDrawListener.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..d2a3a7de9e02373f3ddb5e6199382d44933cee57
--- /dev/null
+++ b/third_party/WebKit/Source/modules/mediacapturefromelement/AutoCanvasDrawListener.cpp
@@ -0,0 +1,33 @@
+// 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.
+
+#include "config.h"
+#include "modules/mediacapturefromelement/AutoCanvasDrawListener.h"
+
+#include "public/platform/WebSkImage.h"
+
+namespace blink {
+
+// static
+AutoCanvasDrawListener* AutoCanvasDrawListener::create(const PassOwnPtr<WebCanvasCaptureHandler>& handler)
+{
+    return new AutoCanvasDrawListener(handler);
+}
+
+bool AutoCanvasDrawListener::needsNewFrameCapture() const
+{
+    return m_handler->needsNewFrameCapture();
+}
+
+void AutoCanvasDrawListener::setNewFrameCapture(const WTF::PassRefPtr<SkImage>& image)
+{
+    m_handler->sendNewFrame(WebSkImage(image));
+}
+
+AutoCanvasDrawListener::AutoCanvasDrawListener(const PassOwnPtr<WebCanvasCaptureHandler>& handler)
+{
+    m_handler = handler;
+}
+
+} // namespace blink