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

content/gpu/in_process_gpu_thread.cc

 // Copyright 2013 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.
 
 #include "content/gpu/in_process_gpu_thread.h"
 
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "content/common/gpu/gpu_memory_buffer_factory.h"
 #include "content/gpu/gpu_child_thread.h"
@@ skipping 56 matching lines @@
 
   gpu_process_->set_main_thread(child_thread);
 }
 
 void InProcessGpuThread::CleanUp() {
   SetThreadWasQuitProperly(true);
   delete gpu_process_;
 }
 
 base::Thread* CreateInProcessGpuThread(
-    const InProcessChildThreadParams& params) {
+    const InProcessChildThreadParams& params,
+    const gpu::GpuPreferences& gpu_preferences) {
   return new InProcessGpuThread(
-      params, GpuChildThread::GetGpuPreferencesFromCommandLine(), nullptr);
+      params, gpu_preferences, nullptr);
 }
 
 }  // namespace content