Add gpu_main_thread_factory.h to expose less of content's guts.

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 38 matching lines @@
 class ShaderDiskCache;
 struct SyncToken;
 }
 
 namespace service_manager {
 class InterfaceProvider;
 }
 
 namespace content {
 class BrowserChildProcessHostImpl;
-class InProcessChildThreadParams;
-
-typedef base::Thread* (*GpuMainThreadFactoryFunction)(
-    const InProcessChildThreadParams&, const gpu::GpuPreferences&);
 
 class GpuProcessHost : public BrowserChildProcessHostDelegate,
                        public IPC::Sender,
                        public ui::mojom::GpuHost,
                        public base::NonThreadSafe {
  public:
   enum GpuProcessKind {
     GPU_PROCESS_KIND_UNSANDBOXED,
     GPU_PROCESS_KIND_SANDBOXED,
     GPU_PROCESS_KIND_COUNT
@@ skipping 31 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);
 
-  CONTENT_EXPORT static void RegisterGpuMainThreadFactory(
-      GpuMainThreadFactoryFunction create);
-
   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);
   int host_id() const { return host_id_; }
 
   // IPC::Sender implementation.
   bool Send(IPC::Message* msg) override;
 
@@ skipping 168 matching lines @@
   ui::mojom::GpuMainAssociatedPtr gpu_main_ptr_;
   ui::mojom::GpuServicePtr gpu_service_ptr_;
   mojo::Binding<ui::mojom::GpuHost> gpu_host_binding_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuProcessHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_H_