Compute if a layer is drawn without LayerTree hierarchy

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 273 matching lines @@
   virtual void NotifyTileStateChanged(const Tile* tile) {}
 
   virtual ScrollbarLayerImplBase* ToScrollbarLayer();
 
   // Returns true if this layer has content to draw.
   void SetDrawsContent(bool draws_content);
   bool DrawsContent() const { return draws_content_; }
 
   int NumDescendantsThatDrawContent() const;
   void SetHideLayerAndSubtree(bool hide);
-  bool hide_layer_and_subtree() const { return hide_layer_and_subtree_; }
 
   void SetTransformOrigin(const gfx::Point3F& transform_origin);
   gfx::Point3F transform_origin() const { return transform_origin_; }
 
   void SetBackgroundColor(SkColor background_color);
   SkColor background_color() const { return background_color_; }
   // If contents_opaque(), return an opaque color else return a
   // non-opaque color.  Tries to return background_color(), if possible.
   SkColor SafeOpaqueBackgroundColor() const;
 
@@ skipping 373 matching lines @@
 
   void set_sorted_for_recursion(bool sorted_for_recursion) {
     sorted_for_recursion_ = sorted_for_recursion;
   }
   bool sorted_for_recursion() { return sorted_for_recursion_; }
 
   int num_copy_requests_in_target_subtree();
 
   void UpdatePropertyTreeForScrollingAndAnimationIfNeeded();
 
-  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();
-  }
-  bool LayerIsHidden() const;
+  bool IsHidden() const;
 
   float GetIdealContentsScale() const;
 
   bool was_ever_ready_since_last_transform_animation() const {
     return was_ever_ready_since_last_transform_animation_;
   }
 
   void set_was_ever_ready_since_last_transform_animation(bool was_ready) {
     was_ever_ready_since_last_transform_animation_ = was_ready;
   }
@@ skipping 85 matching lines @@
   bool should_flatten_transform_from_property_tree_ : 1;
 
   // Tracks if drawing-related properties have changed since last redraw.
   bool layer_property_changed_ : 1;
 
   bool masks_to_bounds_ : 1;
   bool contents_opaque_ : 1;
   bool is_root_for_isolated_group_ : 1;
   bool use_parent_backface_visibility_ : 1;
   bool draws_content_ : 1;
-  bool hide_layer_and_subtree_ : 1;
 
   // Cache transform_'s invertibility.
   bool transform_is_invertible_ : 1;
 
   // Set for the layer that other layers are fixed to.
   bool is_container_for_fixed_position_layers_ : 1;
 
   bool is_affected_by_page_scale_ : 1;
 
   // This is true if and only if the layer was ever ready since it last animated
@@ skipping 77 matching lines @@
 
   bool force_render_surface_;
 
   std::vector<FrameTimingRequest> frame_timing_requests_;
   bool frame_timing_requests_dirty_;
   bool visited_;
   bool layer_or_descendant_is_drawn_;
   // If true, the layer or one of its descendants has a wheel or touch handler.
   bool layer_or_descendant_has_input_handler_;
   bool sorted_for_recursion_;
-  bool is_hidden_from_property_trees_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_IMPL_H_