gpu: Replace GpuMsg_Finalize ipc with equivalent mojom api

content/browser/gpu/gpu_process_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_BROWSER_GPU_GPU_PROCESS_HOST_H_
 #define CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 83 matching lines @@
   // Helper function to send the given message to the GPU process on the IO
   // thread. Calls Get and if a host is returned, sends it. |force_create| can
   // be set to force the creation of GpuProcessHost if one doesn't already
   // exist. This function can be called from any thread. Deletes the message if
   // it cannot be sent.
   CONTENT_EXPORT static void SendOnIO(GpuProcessKind kind,
                                       bool force_create,
                                       IPC::Message* message);
 
   // Helper function to run a callback on the IO thread. The callback receives
-  // the appropriate GpuProcessHost instance. If |force_create| is false, and no
-  // GpuProcessHost instance exists, then the callback is never called.
+  // the appropriate GpuProcessHost instance. Note that the callback can be
+  // called with a null host (e.g. when |force_create| is false, and no
+  // GpuProcessHost instance exists).
   CONTENT_EXPORT static void CallOnIO(
       GpuProcessKind kind,
       bool force_create,
       const base::Callback<void(GpuProcessHost*)>& callback);
 
   service_manager::InterfaceProvider* GetRemoteInterfaces();
 
   // Get the GPU process host for the GPU process with the given ID. Returns
   // null if the process no longer exists.
   static GpuProcessHost* FromID(int host_id);
@@ skipping 34 matching lines @@
   // can stop using it.
   void SendDestroyingVideoSurface(int surface_id, const base::Closure& done_cb);
 #endif
 
   // What kind of GPU process, e.g. sandboxed or unsandboxed.
   GpuProcessKind kind();
 
   // Forcefully terminates the GPU process.
   void ForceShutdown();
 
-  // Asks the GPU process to stop by itself.
-  void StopGpuProcess();
-
   void LoadedShader(const std::string& key, const std::string& data);
 
   ui::mojom::GpuService* gpu_service() { return gpu_service_ptr_.get(); }
 
  private:
   class ConnectionFilterImpl;
 
   static bool ValidateHost(GpuProcessHost* host);
 
   GpuProcessHost(int host_id, GpuProcessKind kind);
@@ skipping 125 matching lines @@
   mojo::Binding<ui::mojom::GpuHost> gpu_host_binding_;
 
   base::WeakPtrFactory<GpuProcessHost> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuProcessHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_H_