content/gpu: Set up a mojom connection between browser and gpu.

content/browser/browser_child_process_host_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_BROWSER_BROWSER_CHILD_PROCESS_HOST_IMPL_H_
 #define CONTENT_BROWSER_BROWSER_CHILD_PROCESS_HOST_IMPL_H_
 
 #include <stdint.h>
 
 #include <list>
@@ skipping 66 matching lines @@
   base::TerminationStatus GetTerminationStatus(bool known_dead,
                                                int* exit_code) override;
   std::unique_ptr<base::SharedPersistentMemoryAllocator> TakeMetricsAllocator()
       override;
   void SetName(const base::string16& name) override;
   void SetHandle(base::ProcessHandle handle) override;
   std::string GetServiceRequestChannelToken() override;
 
   // ChildProcessHostDelegate implementation:
   bool CanShutdown() override;
+  void OnChannelInitialized(IPC::Channel* channel) override;
   void OnChildDisconnected() override;
   const base::Process& GetProcess() const override;
   service_manager::InterfaceProvider* GetRemoteInterfaces() override;
   bool OnMessageReceived(const IPC::Message& message) override;
   void OnChannelConnected(int32_t peer_pid) override;
   void OnChannelError() override;
   void OnBadMessageReceived(const IPC::Message& message) override;
 
   // Terminates the process and logs a stack trace after a bad message was
   // received from the child process.
   void TerminateOnBadMessageReceived(const std::string& error);
 
   // Removes this host from the host list. Calls ChildProcessHost::ForceShutdown
   void ForceShutdown();
 
   // Callers can reduce the BrowserChildProcess' priority.
   void SetBackgrounded(bool backgrounded);
 
   // Adds an IPC message filter.
   void AddFilter(BrowserMessageFilter* filter);
 
   static void HistogramBadMessageTerminated(int process_type);
 
   BrowserChildProcessHostDelegate* delegate() const { return delegate_; }
 
   ChildConnection* child_connection() const {
     return child_connection_.get();
   }
 
+  IPC::Channel* child_channel() const { return channel_; }
+
   typedef std::list<BrowserChildProcessHostImpl*> BrowserChildProcessList;
  private:
   friend class BrowserChildProcessHostIterator;
   friend class BrowserChildProcessObserver;
 
   static BrowserChildProcessList* GetIterator();
 
   static void AddObserver(BrowserChildProcessObserver* observer);
   static void RemoveObserver(BrowserChildProcessObserver* observer);
 
@@ skipping 35 matching lines @@
 #if defined(OS_WIN)
   // Watches to see if the child process exits before the IPC channel has
   // been connected. Thereafter, its exit is determined by an error on the
   // IPC channel.
   base::win::ObjectWatcher early_exit_watcher_;
 #endif
 
   // The memory allocator, if any, in which the process will write its metrics.
   std::unique_ptr<base::SharedPersistentMemoryAllocator> metrics_allocator_;
 
+  IPC::Channel* channel_ = nullptr;
   bool is_channel_connected_;
   bool notify_child_disconnected_;
 
   base::WeakPtrFactory<BrowserChildProcessHostImpl> weak_factory_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_CHILD_PROCESS_HOST_IMPL_H_