cc : Make visible rect independant of render surface's is_clipped value

cc/trees/draw_property_utils.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/draw_property_utils.h"
 
 #include <stddef.h>
 
 #include <vector>
 
@@ skipping 607 matching lines @@
     bool include_expanding_clips = true;
     ConditionalClip accumulated_clip = ComputeAccumulatedClip(
         property_trees, include_expanding_clips, layer->clip_tree_index(),
         effect_ancestor_with_copy_request);
     if (!accumulated_clip.is_clipped)
       return layer_content_rect;
     accumulated_clip_in_root_space = accumulated_clip.clip_rect;
   } else {
     const ClipNode* clip_node =
         property_trees->clip_tree.Node(layer->clip_tree_index());
-    const EffectNode* effect_node = property_trees->effect_tree.Node(
-        layer->render_target_effect_tree_index());
-    bool fully_visible =
-        !layer->is_clipped() && !effect_node->surface_is_clipped;
-    if (fully_visible) {
-      accumulated_clip_in_root_space = property_trees->clip_tree.ViewportClip();
-    } else {
-      accumulated_clip_in_root_space =
-          clip_node->cached_accumulated_rect_in_screen_space;
-    }
+    accumulated_clip_in_root_space =
+        clip_node->cached_accumulated_rect_in_screen_space;
   }
 
   const EffectNode* root_effect_node =
       non_root_copy_request
           ? property_trees->effect_tree.Node(effect_ancestor_with_copy_request)
           : property_trees->effect_tree.Node(EffectTree::kContentsRootNodeId);
   ConditionalClip accumulated_clip_in_layer_space =
       ComputeTargetRectInLocalSpace(
           accumulated_clip_in_root_space, property_trees,
           root_effect_node->transform_id, layer->transform_tree_index(),
@@ skipping 382 matching lines @@
 void UpdateElasticOverscroll(PropertyTrees* property_trees,
                              const Layer* overscroll_elasticity_layer,
                              const gfx::Vector2dF& elastic_overscroll) {
   UpdateElasticOverscrollInternal(property_trees, overscroll_elasticity_layer,
                                   elastic_overscroll);
 }
 
 }  // namespace draw_property_utils
 
 }  // namespace cc