Get rid of gpu related switches by passing gpu::GpuPreferences via IPC.

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 22 matching lines @@
 #include "ui/gfx/native_widget_types.h"
 #include "url/gurl.h"
 
 struct GPUCreateCommandBufferConfig;
 
 namespace IPC {
 struct ChannelHandle;
 }
 
 namespace gpu {
+struct GpuPreferences;
 struct SyncToken;
 }
 
 namespace content {
 class BrowserChildProcessHostImpl;
 class GpuMainThread;
 class InProcessChildThreadParams;
 class MojoApplicationHost;
 class RenderWidgetHostViewFrameSubscriber;
 class ShaderDiskCache;
 
 typedef base::Thread* (*GpuMainThreadFactoryFunction)(
-    const InProcessChildThreadParams&);
+    const InProcessChildThreadParams&, const gpu::GpuPreferences&);
 
 class GpuProcessHost : public BrowserChildProcessHostDelegate,
                        public IPC::Sender,
                        public base::NonThreadSafe {
  public:
   enum GpuProcessKind {
     GPU_PROCESS_KIND_UNSANDBOXED,
     GPU_PROCESS_KIND_SANDBOXED,
     GPU_PROCESS_KIND_COUNT
   };
@@ skipping 225 matching lines @@
   // Browser-side Mojo endpoint which sets up a Mojo channel with the child
   // process and contains the browser's ServiceRegistry.
   scoped_ptr<MojoApplicationHost> mojo_application_host_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuProcessHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_H_