Revert of services/ui: Have an explicit lifetime/ownership of ui::GpuService.

content/renderer/render_thread_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_RENDERER_RENDER_THREAD_IMPL_H_
 #define CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 70 matching lines @@
 }
 
 namespace memory_coordinator {
 class ChildMemoryCoordinatorImpl;
 }
 
 namespace scheduler {
 class WebThreadBase;
 }
 
-namespace ui {
-class GpuService;
-}
-
 namespace v8 {
 class Extension;
 }
 
 namespace content {
 
 class AppCacheDispatcher;
 class AecDumpMessageFilter;
 class AudioInputMessageFilter;
 class AudioMessageFilter;
@@ skipping 548 matching lines @@
   std::unique_ptr<AudioRendererMixerManager> audio_renderer_mixer_manager_;
 
   HistogramCustomizer histogram_customizer_;
 
   std::unique_ptr<base::MemoryPressureListener> memory_pressure_listener_;
 
   std::unique_ptr<MemoryObserver> memory_observer_;
   std::unique_ptr<memory_coordinator::ChildMemoryCoordinatorImpl>
       memory_coordinator_;
 
-#if defined(MOJO_SHELL_CLIENT)
-  std::unique_ptr<ui::GpuService> gpu_service_;
-#endif
-
   scoped_refptr<base::SingleThreadTaskRunner>
       main_thread_compositor_task_runner_;
 
   // Compositor settings.
   bool is_gpu_rasterization_enabled_;
   bool is_gpu_rasterization_forced_;
   bool is_async_worker_context_enabled_;
   int gpu_rasterization_msaa_sample_count_;
   bool is_lcd_text_enabled_;
   bool is_distance_field_text_enabled_;
@@ skipping 43 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };
 
 #if defined(COMPILER_MSVC)
 #pragma warning(pop)
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_THREAD_IMPL_H_