Remove renderer dependencies from the GPU client classes.

content/renderer/gpu/gpu_channel_host.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_GPU_GPU_CHANNEL_HOST_H_
 #define CONTENT_RENDERER_GPU_GPU_CHANNEL_HOST_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "base/hash_tables.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/process_util.h"
 #include "base/synchronization/lock.h"
+#include "content/common/gpu/gpu_process_launch_causes.h"
 #include "content/common/message_router.h"
 #include "content/public/common/gpu_info.h"
 #include "content/renderer/gpu/gpu_video_decode_accelerator_host.h"
 #include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "ipc/ipc_sync_channel.h"
 #include "ui/gfx/gl/gpu_preference.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/size.h"
 
 class CommandBufferProxy;
+struct GPUCreateCommandBufferConfig;
 class GURL;
 class TransportTextureService;
+class MessageLoop;
 
 namespace base {
 class MessageLoopProxy;
 }
 
 namespace IPC {
 class SyncMessageFilter;
 }
 
 struct GpuListenerInfo {
   GpuListenerInfo();
   ~GpuListenerInfo();
 
   base::WeakPtr<IPC::Channel::Listener> listener;
   scoped_refptr<base::MessageLoopProxy> loop;
 };
 
+class GpuChannelHostFactory {
+ public:
+  virtual ~GpuChannelHostFactory();
+  static GpuChannelHostFactory* instance() { return instance_; }
+
+  virtual bool IsMainThread() = 0;
+  virtual bool IsIOThread() = 0;
+  virtual MessageLoop* GetMainLoop() = 0;
+  virtual base::MessageLoopProxy* GetIOLoopProxy() = 0;
+  virtual base::WaitableEvent* GetShutDownEvent() = 0;
+  virtual scoped_ptr<base::SharedMemory> AllocateSharedMemory(uint32 size) = 0;
+  virtual int32 CreateViewCommandBuffer(
+      int32 surface_id, const GPUCreateCommandBufferConfig& init_params) = 0;
+  virtual GpuChannelHost* EstablishGpuChannelSync(
+      content::CauseForGpuLaunch) = 0;
+
+ protected:
+  static void set_instance(GpuChannelHostFactory* instance) {
+    instance_ = instance;
+  }
+
+ private:
+  static GpuChannelHostFactory* instance_;
+};
+
 // Encapsulates an IPC channel between the renderer and one plugin process.
 // On the plugin side there's a corresponding GpuChannel.
 class GpuChannelHost : public IPC::Message::Sender,
                        public base::RefCountedThreadSafe<GpuChannelHost> {
  public:
   enum State {
     // Not yet connected.
     kUnconnected,
     // Ready to use.
     kConnected,
     // An error caused the host to become disconnected. Recreate channel to
     // reestablish connection.
     kLost
   };
 
   // Called on the render thread
-  GpuChannelHost();
+  explicit GpuChannelHost(GpuChannelHostFactory* factory);
   virtual ~GpuChannelHost();
 
   // Connect to GPU process channel.
   void Connect(const IPC::ChannelHandle& channel_handle,
                base::ProcessHandle renderer_process_for_gpu);
 
   State state() const { return state_; }
 
   // Change state to kLost.
   void SetStateLost();
@@ skipping 46 matching lines @@
   // to be dropped.
   bool WillGpuSwitchOccur(bool is_creating_context,
                           gfx::GpuPreference gpu_preference);
 
   // Forcibly close the channel on the GPU process side. This will
   // cause all command buffers on this side to soon afterward start
   // registering lost contexts. It also has the side effect of setting
   // the state on this side to lost.
   void ForciblyCloseChannel();
 
+  GpuChannelHostFactory* factory() const { return factory_; }
+
  private:
   // A filter used internally to route incoming messages from the IO thread
   // to the correct message loop.
   class MessageFilter : public IPC::ChannelProxy::MessageFilter {
    public:
     explicit MessageFilter(GpuChannelHost* parent);
     virtual ~MessageFilter();
 
     void AddRoute(int route_id,
                   base::WeakPtr<IPC::Channel::Listener> listener,
                   scoped_refptr<base::MessageLoopProxy> loop);
     void RemoveRoute(int route_id);
 
     // IPC::ChannelProxy::MessageFilter implementation:
     virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
     virtual void OnChannelError() OVERRIDE;
 
    private:
     GpuChannelHost* parent_;
 
     typedef base::hash_map<int, GpuListenerInfo> ListenerMap;
     ListenerMap listeners_;
   };
 
+  GpuChannelHostFactory* factory_;
+
   State state_;
 
   content::GPUInfo gpu_info_;
 
   scoped_ptr<IPC::SyncChannel> channel_;
   scoped_refptr<MessageFilter> channel_filter_;
 
   // Used to look up a proxy from its routing id.
   typedef base::hash_map<int, CommandBufferProxy*> ProxyMap;
   ProxyMap proxies_;
 
   // A lock to guard against concurrent access to members like the proxies map
   // for calls from contexts that may live on the compositor or main thread.
   mutable base::Lock context_lock_;
 
   // A filter for sending messages from thread other than the main thread.
   scoped_refptr<IPC::SyncMessageFilter> sync_filter_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuChannelHost);
 };
 
 #endif  // CONTENT_RENDERER_GPU_GPU_CHANNEL_HOST_H_