gpu: Add flag for enabling asynchronous worker context.

content/common/gpu/client/webgraphicscontext3d_command_buffer_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_COMMON_GPU_CLIENT_WEBGRAPHICSCONTEXT3D_COMMAND_BUFFER_IMPL_H_
 #define CONTENT_COMMON_GPU_CLIENT_WEBGRAPHICSCONTEXT3D_COMMAND_BUFFER_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/synchronization/lock.h"
 #include "content/common/content_export.h"
 #include "content/common/gpu/client/command_buffer_metrics.h"
 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
 #include "gpu/ipc/client/command_buffer_proxy_impl.h"
+#include "gpu/ipc/common/gpu_stream_constants.h"
 #include "gpu/ipc/common/surface_handle.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "ui/gl/gpu_preference.h"
 #include "url/gurl.h"
 
 namespace gpu {
 
 class ContextSupport;
 class GpuChannelHost;
 struct SharedMemoryLimits;
@@ skipping 26 matching lines @@
   // If surface_handle is not kNullSurfaceHandle, this creates a
   // CommandBufferProxy that renders directly to a view. The view and
   // the associated window must not be destroyed until the returned
   // CommandBufferProxy has been destroyed, otherwise the GPU process might
   // attempt to render to an invalid window handle.
   CONTENT_EXPORT WebGraphicsContext3DCommandBufferImpl(
       gpu::SurfaceHandle surface_handle,
       const GURL& active_url,
       scoped_refptr<gpu::GpuChannelHost> host,
       gfx::GpuPreference gpu_preference,
-      bool automatic_flushes);
+      bool automatic_flushes,
+      int32_t stream_id,
+      gpu::GpuStreamPriority stream_priority);
 
   CONTENT_EXPORT ~WebGraphicsContext3DCommandBufferImpl();
 
   gpu::CommandBufferProxyImpl* GetCommandBufferProxy() {
     return command_buffer_.get();
   }
 
   CONTENT_EXPORT gpu::ContextSupport* GetContextSupport();
 
   gpu::gles2::GLES2Implementation* GetImplementation() {
@@ skipping 35 matching lines @@
                      scoped_refptr<gpu::gles2::ShareGroup> share_group,
                      const gpu::gles2::ContextCreationAttribHelper& attributes,
                      command_buffer_metrics::ContextType context_type);
 
   void OnContextLost();
 
   bool initialized_ = false;
   bool initialize_failed_ = false;
   WebGraphicsContextLostCallback* context_lost_callback_ = nullptr;
 
-  bool automatic_flushes_;
-
   // State needed by MaybeInitializeGL.
   scoped_refptr<gpu::GpuChannelHost> host_;
   gpu::SurfaceHandle surface_handle_;
   GURL active_url_;
-
   gfx::GpuPreference gpu_preference_;
+  bool automatic_flushes_;
+  int32_t stream_id_;
+  gpu::GpuStreamPriority stream_priority_;
 
   std::unique_ptr<gpu::CommandBufferProxyImpl> command_buffer_;
   std::unique_ptr<gpu::gles2::GLES2CmdHelper> gles2_helper_;
   std::unique_ptr<gpu::TransferBuffer> transfer_buffer_;
   std::unique_ptr<gpu::gles2::GLES2Implementation> real_gl_;
   std::unique_ptr<gpu::gles2::GLES2Interface> trace_gl_;
 
   // Member variables should appear before the WeakPtrFactory, to ensure
   // that any WeakPtrs to Controller are invalidated before its members
   // variable's destructors are executed, rendering them invalid.
   base::WeakPtrFactory<WebGraphicsContext3DCommandBufferImpl> weak_ptr_factory_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_CLIENT_WEBGRAPHICSCONTEXT3D_COMMAND_BUFFER_IMPL_H_