Compute if a layer is drawn without LayerTree hierarchy

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 319 matching lines @@
     return use_parent_backface_visibility_;
   }
 
   virtual void SetLayerTreeHost(LayerTreeHost* host);
 
   virtual bool HasDelegatedContent() const;
   bool HasContributingDelegatedRenderPasses() const { return false; }
 
   void SetIsDrawable(bool is_drawable);
 
-  void SetHideLayerAndSubtree(bool hide);
-  bool hide_layer_and_subtree() const { return hide_layer_and_subtree_; }
-
   void SetReplicaLayer(Layer* layer);
   Layer* replica_layer() { return replica_layer_.get(); }
   const Layer* replica_layer() const { return replica_layer_.get(); }
 
   bool has_mask() const { return !!mask_layer_.get(); }
   bool has_replica() const { return !!replica_layer_.get(); }
   bool replica_has_mask() const {
     return replica_layer_.get() &&
            (mask_layer_.get() || replica_layer_->mask_layer_.get());
   }
@@ skipping 201 matching lines @@
 
   void SetMutableProperties(uint32_t properties);
   uint32_t mutable_properties() const { return mutable_properties_; }
 
   void set_visited(bool visited);
   bool visited();
   void set_layer_or_descendant_is_drawn(bool layer_or_descendant_is_drawn);
   bool layer_or_descendant_is_drawn();
   void set_sorted_for_recursion(bool sorted_for_recursion);
   bool sorted_for_recursion();
-  void set_is_hidden_from_property_trees(bool is_hidden) {
-    if (is_hidden == is_hidden_from_property_trees_)
-      return;
-    is_hidden_from_property_trees_ = is_hidden;
-    SetNeedsPushProperties();
-  }
 
   // LayerAnimationValueProvider implementation.
   gfx::ScrollOffset ScrollOffsetForAnimation() const override;
 
   // LayerAnimationValueObserver implementation.
   void OnFilterAnimated(const FilterOperations& filters) override;
   void OnOpacityAnimated(float opacity) override;
   void OnTransformAnimated(const gfx::Transform& transform) override;
   void OnScrollOffsetAnimated(const gfx::ScrollOffset& scroll_offset) override;
   void OnAnimationWaitingForDeletion() override;
@@ skipping 149 matching lines @@
   InputHandler::MainThreadScrollingReason main_thread_scrolling_reasons_;
   bool should_flatten_transform_from_property_tree_ : 1;
   bool have_wheel_event_handlers_ : 1;
   bool have_scroll_event_handlers_ : 1;
   bool user_scrollable_horizontal_ : 1;
   bool user_scrollable_vertical_ : 1;
   bool is_root_for_isolated_group_ : 1;
   bool is_container_for_fixed_position_layers_ : 1;
   bool is_drawable_ : 1;
   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_;
@@ skipping 36 matching lines @@
 
   PaintProperties paint_properties_;
 
   // These all act like draw properties, so don't need push properties.
   gfx::Rect visible_layer_rect_;
   gfx::Rect clip_rect_;
   size_t num_unclipped_descendants_;
 
   std::vector<FrameTimingRequest> frame_timing_requests_;
   bool frame_timing_requests_dirty_;
-  bool is_hidden_from_property_trees_;
 
   DISALLOW_COPY_AND_ASSIGN(Layer);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_H_