Basic use implementation for MediaStream from Canvas: captureStream()

content/renderer/renderer_blink_platform_impl.h

 // Copyright (c) 2012 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 CONTENT_RENDERER_RENDERER_BLINK_PLATFORM_IMPL_H_
 #define CONTENT_RENDERER_RENDERER_BLINK_PLATFORM_IMPL_H_
 
 #include "base/compiler_specific.h"
 #include "base/id_map.h"
 #include "base/memory/scoped_ptr.h"
 #include "cc/blink/web_compositor_support_impl.h"
 #include "content/child/blink_platform_impl.h"
 #include "content/common/content_export.h"
 #include "content/renderer/webpublicsuffixlist_impl.h"
 #include "device/vibration/vibration_manager.mojom.h"
 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
 #include "third_party/WebKit/public/platform/modules/indexeddb/WebIDBFactory.h"
 #include "third_party/WebKit/public/platform/modules/screen_orientation/WebScreenOrientationType.h"
 
 namespace cc {
 class ContextProvider;
 }
 
 namespace IPC {
 class SyncMessageFilter;
 }
 
 namespace blink {
 class WebBatteryStatus;
+class WebCanvasCaptureHandler;
 class WebDeviceMotionData;
 class WebDeviceOrientationData;
 class WebGraphicsContext3DProvider;
 class WebMediaRecorderHandler;
+class WebMediaStream;
 class WebServiceWorkerCacheStorage;
 }
 
 namespace scheduler {
 class RendererScheduler;
 class WebThreadImplForRendererScheduler;
 }
 
 namespace content {
 class BatteryStatusDispatcher;
@@ skipping 90 matching lines @@
       blink::WebMIDIAccessorClient* client) override;
 
   blink::WebBlobRegistry* blobRegistry() override;
   void sampleGamepads(blink::WebGamepads&) override;
   blink::WebRTCPeerConnectionHandler* createRTCPeerConnectionHandler(
       blink::WebRTCPeerConnectionHandlerClient* client) override;
   blink::WebRTCCertificateGenerator* createRTCCertificateGenerator() override;
   blink::WebMediaRecorderHandler* createMediaRecorderHandler() override;
   blink::WebMediaStreamCenter* createMediaStreamCenter(
       blink::WebMediaStreamCenterClient* client) override;
+  blink::WebCanvasCaptureHandler* createCanvasCaptureHandler(
+      const blink::WebSize& size,
+      blink::WebMediaStream* stream) override;
   bool processMemorySizesInBytes(size_t* private_bytes,
                                  size_t* shared_bytes) override;
   blink::WebGraphicsContext3D* createOffscreenGraphicsContext3D(
       const blink::WebGraphicsContext3D::Attributes& attributes) override;
   blink::WebGraphicsContext3D* createOffscreenGraphicsContext3D(
       const blink::WebGraphicsContext3D::Attributes& attributes,
       blink::WebGraphicsContext3D* share_context) override;
   blink::WebGraphicsContext3D* createOffscreenGraphicsContext3D(
       const blink::WebGraphicsContext3D::Attributes& attributes,
       blink::WebGraphicsContext3D* share_context,
@@ skipping 124 matching lines @@
   IDMap<PlatformEventObserverBase, IDMapOwnPointer> platform_event_observers_;
 
   scheduler::RendererScheduler* renderer_scheduler_;  // NOT OWNED
 
   DISALLOW_COPY_AND_ASSIGN(RendererBlinkPlatformImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDERER_BLINK_PLATFORM_IMPL_H_