cc : Remove invalid DCHECK from draw_property_utils.cc

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 1211 matching lines @@
   int target_effect_id = effect_node->target_id;
   const bool success = property_trees->GetToTarget(
       parent_clip_node->target_transform_id, target_effect_id,
       &clip_parent_target_to_target);
 
   if (!success) {
     render_surface->SetClipRect(gfx::Rect());
     return;
   }
 
-  DCHECK_LT(parent_clip_node->target_transform_id,
-            transform_tree.TargetId(transform_node->id));
-  render_surface->SetClipRect(gfx::ToEnclosingRect(MathUtil::ProjectClippedRect(
-      clip_parent_target_to_target, parent_clip_node->clip_in_target_space)));
+  if (parent_clip_node->target_transform_id <
+      transform_tree.TargetId(transform_node->id)) {
+    render_surface->SetClipRect(gfx::ToEnclosingRect(
+        MathUtil::ProjectClippedRect(clip_parent_target_to_target,
+                                     parent_clip_node->clip_in_target_space)));
+  } else {
+    render_surface->SetClipRect(gfx::ToEnclosingRect(MathUtil::MapClippedRect(
+        clip_parent_target_to_target, parent_clip_node->clip_in_target_space)));
+  }
 }
 
 template <typename LayerType>
 static gfx::Transform ScreenSpaceTransformInternal(LayerType* layer,
                                                    const TransformTree& tree) {
   gfx::Transform xform(1, 0, 0, 1, layer->offset_to_transform_parent().x(),
                        layer->offset_to_transform_parent().y());
   gfx::Transform ssxform = tree.ToScreen(layer->transform_tree_index());
   xform.ConcatTransform(ssxform);
   if (layer->should_flatten_transform_from_property_tree())
@@ skipping 207 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