Compute if a layer is clipped outside CalcDrawProps

cc/trees/occlusion_tracker.cc

 // Copyright 2012 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/occlusion_tracker.h"
 
 #include <algorithm>
 
 #include "cc/base/math_util.h"
 #include "cc/base/region.h"
@@ skipping 350 matching lines @@
     return;
 
   DCHECK(layer->visible_layer_rect().Contains(opaque_layer_region.bounds()));
 
   // TODO(danakj): Find a rect interior to each transformed quad.
   if (!layer->draw_transform().Preserves2dAxisAlignment())
     return;
 
   gfx::Rect clip_rect_in_target = ScreenSpaceClipRectInTargetSurface(
       layer->render_target()->render_surface(), screen_space_clip_rect_);
-  if (layer->is_clipped()) {
+  if (layer->is_clipped_from_property_tree()) {
     clip_rect_in_target.Intersect(layer->clip_rect());
   } else {
     clip_rect_in_target.Intersect(
         layer->render_target()->render_surface()->content_rect());
   }
 
   for (size_t i = 0; i < opaque_layer_region.GetRegionComplexity(); ++i) {
     gfx::Rect transformed_rect =
         MathUtil::MapEnclosedRectWith2dAxisAlignedTransform(
             layer->draw_transform(), opaque_layer_region.GetRect(i));
     transformed_rect.Intersect(clip_rect_in_target);
     if (transformed_rect.width() < minimum_tracking_size_.width() &&
         transformed_rect.height() < minimum_tracking_size_.height())
       continue;
     stack_.back().occlusion_from_inside_target.Union(transformed_rect);
   }
 }
 
 Region OcclusionTracker::ComputeVisibleRegionInScreen() const {
   DCHECK(!stack_.back().target->parent());
   const SimpleEnclosedRegion& occluded =
       stack_.back().occlusion_from_inside_target;
   Region visible_region(screen_space_clip_rect_);
   for (size_t i = 0; i < occluded.GetRegionComplexity(); ++i)
     visible_region.Subtract(occluded.GetRect(i));
   return visible_region;
 }
 
 }  // namespace cc