Remove --background-color-instead-of-checkerboard flag.

cc/layers/layer.h

 // Copyright 2010 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 CC_LAYERS_LAYER_H_
 #define CC_LAYERS_LAYER_H_
 
 #include <set>
 #include <string>
 
@@ skipping 280 matching lines @@
   void SetTouchEventHandlerRegion(const Region& touch_event_handler_region);
   const Region& touch_event_handler_region() const {
     return touch_event_handler_region_;
   }
 
   void set_did_scroll_callback(const base::Closure& callback) {
     did_scroll_callback_ = callback;
   }
 
   void SetDrawCheckerboardForMissingTiles(bool checkerboard);
-  bool DrawCheckerboardForMissingTiles() const {
+  bool draw_checkerboard_for_missing_tiles() const {
     return draw_checkerboard_for_missing_tiles_;
   }
 
   void SetForceRenderSurface(bool force_render_surface);
   bool force_render_surface() const { return force_render_surface_; }
 
   gfx::Vector2d ScrollDelta() const { return gfx::Vector2d(); }
   gfx::Vector2dF TotalScrollOffset() const {
     // Floating point to match the LayerImpl version.
     return scroll_offset() + ScrollDelta();
@@ skipping 308 matching lines @@
   DrawProperties<Layer> draw_properties_;
 
   PaintProperties paint_properties_;
 
   DISALLOW_COPY_AND_ASSIGN(Layer);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_H_