Add OnRequestCanvasDrawListener

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

 // 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/CanvasCaptureMediaStreamTrack.h"
 
 #include "core/html/HTMLCanvasElement.h"
 #include "modules/mediacapturefromelement/AutoCanvasDrawListener.h"
+#include "modules/mediacapturefromelement/OnRequestCanvasDrawListener.h"
 #include "modules/mediacapturefromelement/TimedCanvasDrawListener.h"
 #include "platform/NotImplemented.h"
 #include "platform/mediastream/MediaStreamCenter.h"
 
 namespace blink {
 
 CanvasCaptureMediaStreamTrack* CanvasCaptureMediaStreamTrack::create(MediaStreamComponent* component, PassRefPtrWillBeRawPtr<HTMLCanvasElement> element, const PassOwnPtr<WebCanvasCaptureHandler> handler)
 {
     return new CanvasCaptureMediaStreamTrack(component, element, handler);
 }
 
 CanvasCaptureMediaStreamTrack* CanvasCaptureMediaStreamTrack::create(MediaStreamComponent* component, PassRefPtrWillBeRawPtr<HTMLCanvasElement> element, const PassOwnPtr<WebCanvasCaptureHandler> handler, double frameRate)
 {
     return new CanvasCaptureMediaStreamTrack(component, element, handler, frameRate);
 }
 
 HTMLCanvasElement* CanvasCaptureMediaStreamTrack::canvas() const
 {
     return m_canvasElement.get();
 }
 
 void CanvasCaptureMediaStreamTrack::requestFrame()
 {
-    notImplemented();
-    return;
+    m_drawListener->requestFrame();
 }
 
 CanvasCaptureMediaStreamTrack* CanvasCaptureMediaStreamTrack::clone(ExecutionContext* context)
 {
     MediaStreamComponent* clonedComponent = MediaStreamComponent::create(component()->source());
     CanvasCaptureMediaStreamTrack* clonedTrack = new CanvasCaptureMediaStreamTrack(*this, clonedComponent);
     MediaStreamCenter::instance().didCreateMediaStreamTrack(clonedComponent);
     return clonedTrack;
 }
 
@@ skipping 20 matching lines @@
     suspendIfNeeded();
     m_drawListener = AutoCanvasDrawListener::create(handler);
     m_canvasElement->addListener(m_drawListener.get());
 }
 
 CanvasCaptureMediaStreamTrack::CanvasCaptureMediaStreamTrack(MediaStreamComponent* component, PassRefPtrWillBeRawPtr<HTMLCanvasElement> element, const PassOwnPtr<WebCanvasCaptureHandler> handler, double frameRate)
     : MediaStreamTrack(element->executionContext(), component)
     , m_canvasElement(element)
 {
     suspendIfNeeded();
-    TimedCanvasDrawListener* listener = TimedCanvasDrawListener::create(handler, frameRate);
-    m_drawListener = listener;
+    if (frameRate == 0) {
+        m_drawListener = OnRequestCanvasDrawListener::create(handler);
+    } else {
+        TimedCanvasDrawListener* listener = TimedCanvasDrawListener::create(handler, frameRate);
+        listener->requestNewFrame();
+        m_drawListener = listener;
+    }
     m_canvasElement->addListener(m_drawListener.get());
-    listener->requestNewFrame();
 }
 
 } // namespace blink