cc: fix damage tracker rect with hidpi filters.

cc/trees/damage_tracker.cc

 // Copyright 2011 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/damage_tracker.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 121 matching lines @@
 
   if (target_surface_property_changed_only_from_descendant) {
     damage_rect_for_this_update = target_surface_content_rect;
   } else {
     // TODO(shawnsingh): can we clamp this damage to the surface's content rect?
     // (affects performance, but not correctness)
     damage_rect_for_this_update = damage_from_active_layers;
     damage_rect_for_this_update.Union(damage_from_surface_mask);
     damage_rect_for_this_update.Union(damage_from_leftover_rects);
     damage_rect_for_this_update =
-        filters.MapRect(damage_rect_for_this_update, SkMatrix::I());
+        filters.MapRect(damage_rect_for_this_update,
+                        target_surface->FiltersTransform().matrix());
   }
 
   // Damage accumulates until we are notified that we actually did draw on that
   // frame.
   current_damage_rect_.Union(damage_rect_for_this_update);
 }
 
 DamageTracker::LayerRectMapData& DamageTracker::RectDataForLayer(
     int layer_id,
     bool* layer_is_new) {
@@ skipping 276 matching lines @@
   // used for the blur in this layer this frame.
   const FilterOperations& background_filters =
       render_surface->BackgroundFilters();
   if (background_filters.HasFilterThatMovesPixels()) {
     ExpandDamageRectInsideRectWithFilters(
         target_damage_rect, surface_rect_in_target_space, background_filters);
   }
 }
 
 }  // namespace cc