Add OnRequestCanvasDrawListener

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

Index: third_party/WebKit/Source/modules/mediacapturefromelement/OnRequestCanvasDrawListener.cpp
diff --git a/third_party/WebKit/Source/modules/mediacapturefromelement/OnRequestCanvasDrawListener.cpp b/third_party/WebKit/Source/modules/mediacapturefromelement/OnRequestCanvasDrawListener.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..2a81d68018000a2663d0c249c67f4beecde7c481
--- /dev/null
+++ b/third_party/WebKit/Source/modules/mediacapturefromelement/OnRequestCanvasDrawListener.cpp
@@ -0,0 +1,45 @@
+// 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 "modules/mediacapturefromelement/OnRequestCanvasDrawListener.h"
+
+#include "platform/Task.h"
+#include "public/platform/Platform.h"
+#include "public/platform/WebSkImage.h"
+#include "public/platform/WebTaskRunner.h"
+#include "public/platform/WebTraceLocation.h"
+
+namespace blink {
+
+OnRequestCanvasDrawListener::OnRequestCanvasDrawListener(const PassOwnPtr<WebCanvasCaptureHandler>& handler)
+    :CanvasDrawListener(handler)
+{
+    m_requestFrame = false;
+}
+
+OnRequestCanvasDrawListener::~OnRequestCanvasDrawListener() {}
+
+// static
+OnRequestCanvasDrawListener* OnRequestCanvasDrawListener::create(const PassOwnPtr<WebCanvasCaptureHandler>& handler)
+{
+    return new OnRequestCanvasDrawListener(handler);
+}
+
+bool OnRequestCanvasDrawListener::needsNewFrame() const
+{
+    return m_requestFrame && CanvasDrawListener::needsNewFrame();
+}
+
+void OnRequestCanvasDrawListener::sendNewFrame(const WTF::PassRefPtr<SkImage>& image)
+{
+    m_requestFrame = false;
+    CanvasDrawListener::sendNewFrame(image);
+}
+
+void OnRequestCanvasDrawListener::requestFrame()
+{
+    m_requestFrame = true;
+}
+
+} // namespace blink