cc : Use effect tree to determine if a layer is inside replica

cc/trees/property_tree_builder.cc

 // Copyright 2014 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.
 
 #include "cc/trees/property_tree_builder.h"
 
 #include <stddef.h>
 
 #include <map>
 #include <set>
@@ skipping 615 matching lines @@
     }
     node.data.clip_id = data_from_ancestor.clip_tree_parent;
   } else {
     // Root render surface acts the unbounded and untransformed to draw content
     // into. Transform node created from root layer (includes device scale
     // factor) and clip node created from root layer (include viewports) applies
     // to root render surface's content, but not root render surface itself.
     node.data.transform_id = kRootPropertyTreeNodeId;
     node.data.clip_id = kRootPropertyTreeNodeId;
   }
+  node.data.target_id =
+      should_create_render_surface
+          ? data_from_ancestor.effect_tree->next_available_id()
+          : data_for_children->render_target;
   data_for_children->effect_tree_parent =
       data_for_children->effect_tree->Insert(node, parent_id);
   layer->SetEffectTreeIndex(data_for_children->effect_tree_parent);
   if (should_create_render_surface) {
     data_for_children->compound_transform_since_render_target =
         gfx::Transform();
     data_for_children->axis_align_since_render_target = true;
   }
   return should_create_render_surface;
 }
@@ skipping 349 matching lines @@
   if (SkColorGetA(color) != 255)
     color = SkColorSetA(color, 255);
   BuildPropertyTreesTopLevelInternal(
       root_layer, page_scale_layer, inner_viewport_scroll_layer,
       outer_viewport_scroll_layer, overscroll_elasticity_layer,
       elastic_overscroll, page_scale_factor, device_scale_factor, viewport,
       device_transform, property_trees, color);
 }
 
 }  // namespace cc