cc : Delete layer's draw blend mode

cc/layers/layer_impl.h

 // Copyright 2011 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_IMPL_H_
 #define CC_LAYERS_LAYER_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 169 matching lines @@
 
   float Opacity() const;
   const gfx::Transform& Transform() const;
 
   void SetElementId(ElementId element_id);
   ElementId element_id() const { return element_id_; }
 
   void SetMutableProperties(uint32_t properties);
   uint32_t mutable_properties() const { return mutable_properties_; }
 
-  void set_draw_blend_mode(SkBlendMode blend_mode) {
-    draw_blend_mode_ = blend_mode;
-  }
-  SkBlendMode draw_blend_mode() const { return draw_blend_mode_; }
-
   void SetPosition(const gfx::PointF& position);
   gfx::PointF position() const { return position_; }
 
   bool IsAffectedByPageScale() const;
 
   gfx::Vector2dF FixedContainerSizeDelta() const;
 
   bool Is3dSorted() const { return GetSortingContextId() != 0; }
 
   void SetUseParentBackfaceVisibility(bool use) {
@@ skipping 300 matching lines @@
 
   // This is true if and only if the layer was ever ready since it last animated
   // (all content was complete).
   bool was_ever_ready_since_last_transform_animation_ : 1;
 
   Region non_fast_scrollable_region_;
   Region touch_event_handler_region_;
   SkColor background_color_;
   SkColor safe_opaque_background_color_;
 
-  SkBlendMode draw_blend_mode_;
   gfx::PointF position_;
 
   gfx::Rect clip_rect_in_target_space_;
   int transform_tree_index_;
   int effect_tree_index_;
   int clip_tree_index_;
   int scroll_tree_index_;
 
  protected:
   friend class TreeSynchronizer;
@@ skipping 35 matching lines @@
   // the overlay scrollbars. It's set on the scroll layer (not the scrollbar
   // layers) and consumed by LayerTreeImpl::PushPropertiesTo during activation.
   bool needs_show_scrollbars_ : 1;
 
   DISALLOW_COPY_AND_ASSIGN(LayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_IMPL_H_