Add a hide_layer_and_subtree() flag to cc::Layer

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 <string>
 
 #include "base/callback.h"
@@ skipping 250 matching lines @@
     return use_parent_backface_visibility_;
   }
 
   virtual void SetLayerTreeHost(LayerTreeHost* host);
 
   bool HasDelegatedContent() const { return false; }
   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 177 matching lines @@
   std::string debug_name_;
   CompositingReasons compositing_reasons_;
   float opacity_;
   skia::RefPtr<SkImageFilter> filter_;
   WebKit::WebFilterOperations filters_;
   WebKit::WebFilterOperations background_filters_;
   float anchor_point_z_;
   bool is_container_for_fixed_position_layers_;
   LayerPositionConstraint position_constraint_;
   bool is_drawable_;
+  bool hide_layer_and_subtree_;
   bool masks_to_bounds_;
   bool contents_opaque_;
   bool double_sided_;
   bool preserves_3d_;
   bool use_parent_backface_visibility_;
   bool draw_checkerboard_for_missing_tiles_;
   bool force_render_surface_;
 
   gfx::Transform transform_;
   gfx::Transform sublayer_transform_;
@@ skipping 11 matching lines @@
   DrawProperties<Layer, RenderSurface> draw_properties_;
 
   PaintProperties paint_properties_;
 
   DISALLOW_COPY_AND_ASSIGN(Layer);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_H_