cc: Start using raster/eviction iterators.

cc/base/tiling_data.cc

 // Copyright 2010 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/base/tiling_data.h"
 
 #include <algorithm>
 
 #include "ui/gfx/rect.h"
 #include "ui/gfx/vector2d.h"
@@ skipping 470 matching lines @@
       delta_y_(0),
       current_step_(0),
       horizontal_step_count_(0),
       vertical_step_count_(0) {
   if (tiling_data_->num_tiles_x() <= 0 || tiling_data_->num_tiles_y() <= 0) {
     done();
     return;
   }
 
   gfx::Rect consider(consider_rect);
-  gfx::Rect ignore(ignore_rect);
-  gfx::Rect center(center_rect);
   consider.Intersect(tiling_data_->tiling_rect());
-  ignore.Intersect(tiling_data_->tiling_rect());
   if (consider.IsEmpty()) {
     done();
     return;
   }
 
+  gfx::Rect center(center_rect);
+  gfx::Rect ignore(ignore_rect);
+  ignore.Intersect(tiling_data_->tiling_rect());
+
   consider_left_ =
       tiling_data_->FirstBorderTileXIndexFromSrcCoord(consider.x());
   consider_top_ = tiling_data_->FirstBorderTileYIndexFromSrcCoord(consider.y());
   consider_right_ =
       tiling_data_->LastBorderTileXIndexFromSrcCoord(consider.right() - 1);
   consider_bottom_ =
       tiling_data_->LastBorderTileYIndexFromSrcCoord(consider.bottom() - 1);
 
   if (!ignore.IsEmpty()) {
     ignore_left_ = tiling_data_->FirstBorderTileXIndexFromSrcCoord(ignore.x());
@@ skipping 171 matching lines @@
   current_step_ = 0;
   direction_ = static_cast<Direction>((direction_ + 1) % 4);
 
   if (direction_ == RIGHT || direction_ == LEFT) {
     ++vertical_step_count_;
     ++horizontal_step_count_;
   }
 }
 
 }  // namespace cc