Provide shared context to Platform API in renderer.

content/renderer/render_thread_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_RENDER_THREAD_IMPL_H_
 #define CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/observer_list.h"
 #include "base/string16.h"
 #include "base/timer.h"
 #include "build/build_config.h"
 #include "content/common/child_process.h"
 #include "content/common/child_thread.h"
 #include "content/common/content_export.h"
 #include "content/common/gpu/client/gpu_channel_host.h"
 #include "content/common/gpu/gpu_process_launch_causes.h"
 #include "content/public/renderer/render_thread.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "ui/gfx/native_widget_types.h"
 
+class GrContext;
 class SkBitmap;
 struct ViewMsg_New_Params;
 
 namespace WebKit {
+class WebGraphicsContext3D;
 class WebMediaStreamCenter;
 class WebMediaStreamCenterClient;
 }
 
 namespace base {
 class MessageLoopProxy;
 class Thread;
 
 #if defined(OS_WIN)
 namespace win {
 class ScopedCOMInitializer;
 }
 #endif
 }
 
+namespace cc {
+class ContextProvider;
+}
+
 namespace IPC {
 class ForwardingMessageFilter;
 }
 
 namespace media {
 class AudioHardwareConfig;
 }
 
 namespace v8 {
 class Extension;
 }
 
+namespace webkit {
+namespace gpu {
+class GrContextForWebGraphicsContext3D;
+}
+}
+
 namespace content {
 
 class AppCacheDispatcher;
 class AudioInputMessageFilter;
 class AudioMessageFilter;
 class AudioRendererMixerManager;
 class CompositorThread;
 class DBMessageFilter;
 class DevToolsAgentFilter;
 class DomStorageDispatcher;
@@ skipping 134 matching lines @@
 
   AudioInputMessageFilter* audio_input_message_filter() {
     return audio_input_message_filter_.get();
   }
 
   AudioMessageFilter* audio_message_filter() {
     return audio_message_filter_.get();
   }
 
 
-
   // Creates the embedder implementation of WebMediaStreamCenter.
   // The resulting object is owned by WebKit and deleted by WebKit at tear-down.
   WebKit::WebMediaStreamCenter* CreateMediaStreamCenter(
       WebKit::WebMediaStreamCenterClient* client);
 
   // Returns a factory used for creating RTC PeerConnection objects.
   MediaStreamDependencyFactory* GetMediaStreamDependencyFactory();
 
   PeerConnectionTracker* peer_connection_tracker() {
     return peer_connection_tracker_.get();
@@ skipping 25 matching lines @@
   // Returns a graphics context shared among all
   // RendererGpuVideoDecoderFactories, or NULL on error.  Context remains owned
   // by this class and must be null-tested before each use to detect context
   // loss.  The returned context is only valid on the compositor thread when
   // threaded compositing is enabled.
   WebGraphicsContext3DCommandBufferImpl* GetGpuVDAContext3D();
 
   // Handle loss of the shared GpuVDAContext3D context above.
   static void OnGpuVDAContextLoss();
 
+  scoped_refptr<cc::ContextProvider> OffscreenContextProviderForMainThread();
+  scoped_refptr<cc::ContextProvider>
+      OffscreenContextProviderForCompositorThread();
+
   // AudioRendererMixerManager instance which manages renderer side mixer
   // instances shared based on configured audio parameters.  Lazily created on
   // first call.
   AudioRendererMixerManager* GetAudioRendererMixerManager();
 
   // AudioHardwareConfig contains audio hardware configuration for
   // renderer side clients.  Creation requires a synchronous IPC call so it is
   // lazily created on the first call.
   media::AudioHardwareConfig* GetAudioHardwareConfig();
 
@@ skipping 58 matching lines @@
   void OnSetZoomLevelForCurrentURL(const std::string& host, double zoom_level);
   void OnCreateNewView(const ViewMsg_New_Params& params);
   void OnTransferBitmap(const SkBitmap& bitmap, int resource_id);
   void OnPurgePluginListCache(bool reload_pages);
   void OnNetworkStateChanged(bool online);
   void OnGetAccessibilityTree();
   void OnTempCrashWithData(const GURL& data);
 
   void IdleHandlerInForegroundTab();
 
+  scoped_ptr<WebGraphicsContext3DCommandBufferImpl> CreateOffscreenContext3d();
+
   // These objects live solely on the render thread.
   scoped_ptr<AppCacheDispatcher> appcache_dispatcher_;
   scoped_ptr<DomStorageDispatcher> dom_storage_dispatcher_;
   scoped_ptr<IndexedDBDispatcher> main_thread_indexed_db_dispatcher_;
   scoped_ptr<RendererWebKitPlatformSupportImpl> webkit_platform_support_;
 
   // Used on the render thread and deleted by WebKit at shutdown.
   WebKit::WebMediaStreamCenter* media_stream_center_;
 
   // Used on the renderer and IPC threads.
@@ skipping 45 matching lines @@
   // The channel from the renderer process to the GPU process.
   scoped_refptr<GpuChannelHost> gpu_channel_;
 
   // A lazily initiated thread on which file operations are run.
   scoped_ptr<base::Thread> file_thread_;
 
   bool compositor_initialized_;
   scoped_ptr<CompositorThread> compositor_thread_;
   scoped_refptr<IPC::ForwardingMessageFilter> compositor_output_surface_filter_;
 
+  class RendererContextProviderCommandBuffer;
+  scoped_refptr<RendererContextProviderCommandBuffer>
+      shared_contexts_main_thread_;
+  scoped_refptr<RendererContextProviderCommandBuffer>
+      shared_contexts_compositor_thread_;
+
   ObserverList<RenderProcessObserver> observers_;
 
   class GpuVDAContextLostCallback;
   scoped_ptr<GpuVDAContextLostCallback> context_lost_cb_;
   scoped_ptr<WebGraphicsContext3DCommandBufferImpl> gpu_vda_context3d_;
 
   scoped_ptr<AudioRendererMixerManager> audio_renderer_mixer_manager_;
   scoped_ptr<media::AudioHardwareConfig> audio_hardware_config_;
 
   HistogramCustomizer histogram_customizer_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_THREAD_IMPL_H_