Purge the ScrollBlocksOn code.

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 <stddef.h>
 #include <stdint.h>
 
@@ skipping 10 matching lines @@
 #include "cc/animation/layer_animation_value_observer.h"
 #include "cc/animation/layer_animation_value_provider.h"
 #include "cc/base/cc_export.h"
 #include "cc/base/region.h"
 #include "cc/debug/frame_timing_request.h"
 #include "cc/debug/micro_benchmark.h"
 #include "cc/input/input_handler.h"
 #include "cc/layers/layer_lists.h"
 #include "cc/layers/layer_position_constraint.h"
 #include "cc/layers/paint_properties.h"
-#include "cc/layers/scroll_blocks_on.h"
 #include "cc/output/filter_operations.h"
 #include "cc/trees/property_tree.h"
 #include "skia/ext/refptr.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "third_party/skia/include/core/SkImageFilter.h"
 #include "third_party/skia/include/core/SkPicture.h"
 #include "third_party/skia/include/core/SkXfermode.h"
 #include "ui/gfx/geometry/point3_f.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/rect_f.h"
@@ skipping 254 matching lines @@
   void SetNonFastScrollableRegion(const Region& non_fast_scrollable_region);
   const Region& non_fast_scrollable_region() const {
     return non_fast_scrollable_region_;
   }
 
   void SetTouchEventHandlerRegion(const Region& touch_event_handler_region);
   const Region& touch_event_handler_region() const {
     return touch_event_handler_region_;
   }
 
-  void SetScrollBlocksOn(ScrollBlocksOn scroll_blocks_on);
-  ScrollBlocksOn scroll_blocks_on() const { return scroll_blocks_on_; }
-
   void set_did_scroll_callback(const base::Closure& callback) {
     did_scroll_callback_ = callback;
   }
 
   void SetForceRenderSurface(bool force_render_surface);
   bool force_render_surface() const { return force_render_surface_; }
 
   gfx::Vector2dF ScrollDelta() const { return gfx::Vector2dF(); }
   gfx::ScrollOffset CurrentScrollOffset() const { return scroll_offset_; }
 
@@ skipping 418 matching lines @@
   bool draws_content_ : 1;
   bool hide_layer_and_subtree_ : 1;
   bool masks_to_bounds_ : 1;
   bool contents_opaque_ : 1;
   bool double_sided_ : 1;
   bool should_flatten_transform_ : 1;
   bool use_parent_backface_visibility_ : 1;
   bool force_render_surface_ : 1;
   bool transform_is_invertible_ : 1;
   bool has_render_surface_ : 1;
-  ScrollBlocksOn scroll_blocks_on_ : 3;
   Region non_fast_scrollable_region_;
   Region touch_event_handler_region_;
   gfx::PointF position_;
   SkColor background_color_;
   float opacity_;
   SkXfermode::Mode blend_mode_;
   // draw_blend_mode may be different than blend_mode_,
   // when a RenderSurface re-parents the layer's blend_mode.
   SkXfermode::Mode draw_blend_mode_;
   FilterOperations filters_;
@@ skipping 34 matching lines @@
 
   std::vector<FrameTimingRequest> frame_timing_requests_;
   bool frame_timing_requests_dirty_;
 
   DISALLOW_COPY_AND_ASSIGN(Layer);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_H_