Disable low res tilings on desktop.

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 <set>
 #include <string>
 #include <vector>
@@ skipping 211 matching lines @@
   }
 
   bool is_gpu_rasterization_forced() const {
     return is_gpu_rasterization_forced_;
   }
 
   bool is_impl_side_painting_enabled() const {
     return is_impl_side_painting_enabled_;
   }
 
-  bool is_low_res_tiling_enabled() const { return is_low_res_tiling_enabled_; }
-
   bool is_lcd_text_enabled() const { return is_lcd_text_enabled_; }
 
   bool is_distance_field_text_enabled() const {
     return is_distance_field_text_enabled_;
   }
 
   bool is_zero_copy_enabled() const { return is_zero_copy_enabled_; }
 
   bool is_one_copy_enabled() const { return is_one_copy_enabled_; }
 
@@ skipping 332 matching lines @@
   scoped_ptr<MemoryObserver> memory_observer_;
 
   scoped_refptr<base::SingleThreadTaskRunner>
       main_thread_compositor_task_runner_;
   scoped_refptr<base::SingleThreadTaskRunner> main_thread_input_task_runner_;
 
   // Compositor settings
   bool is_gpu_rasterization_enabled_;
   bool is_gpu_rasterization_forced_;
   bool is_impl_side_painting_enabled_;
-  bool is_low_res_tiling_enabled_;
   bool is_lcd_text_enabled_;
   bool is_distance_field_text_enabled_;
   bool is_zero_copy_enabled_;
   bool is_one_copy_enabled_;
 
   std::map<int, mojo::MessagePipeHandle> pending_render_frame_connects_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_THREAD_IMPL_H_