cc: Clear always_use_active_tree_opacity_effect_ids

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 1212 matching lines @@
   data_for_recursion.property_trees->scroll_tree.clear();
   data_for_recursion.compound_transform_since_render_target = gfx::Transform();
   data_for_recursion.axis_align_since_render_target = true;
   data_for_recursion.property_trees->transform_tree.set_device_scale_factor(
       device_scale_factor);
   data_for_recursion.safe_opaque_background_color = color;
   data_for_recursion.property_trees->transform_id_to_index_map.clear();
   data_for_recursion.property_trees->effect_id_to_index_map.clear();
   data_for_recursion.property_trees->clip_id_to_index_map.clear();
   data_for_recursion.property_trees->scroll_id_to_index_map.clear();
+  data_for_recursion.property_trees->always_use_active_tree_opacity_effect_ids
+      .clear();

[jaydasika, 2016/06/07 04:17:35]

I think all clearing code should go into a single method inside property trees
class so that such bugs don't happen again. Will do that in a follow up.

 
   ClipNode root_clip;
   root_clip.data.resets_clip = true;
   root_clip.data.applies_local_clip = true;
   root_clip.data.clip = gfx::RectF(viewport);
   root_clip.data.transform_id = kRootPropertyTreeNodeId;
   data_for_recursion.clip_tree_parent =
       data_for_recursion.property_trees->clip_tree.Insert(
           root_clip, kRootPropertyTreeNodeId);
 
@@ skipping 77 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