cc: Give TilingData back a Size instead of a Rect.

cc/layers/tiled_layer.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/layers/tiled_layer.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/auto_reset.h"
@@ skipping 124 matching lines @@
     is_tiled = auto_tiled;
 
   gfx::Size requested_size = is_tiled ? tile_size : content_bounds();
   const int max_size =
       layer_tree_host()->GetRendererCapabilities().max_texture_size;
   requested_size.SetToMin(gfx::Size(max_size, max_size));
   SetTileSize(requested_size);
 }
 
 void TiledLayer::UpdateBounds() {
-  gfx::Rect old_tiling_rect = tiler_->tiling_rect();
-  gfx::Rect new_tiling_rect = gfx::Rect(content_bounds());
-  if (old_tiling_rect == new_tiling_rect)
+  gfx::Size old_tiling_size = tiler_->tiling_size();
+  gfx::Size new_tiling_size = content_bounds();
+  if (old_tiling_size == new_tiling_size)
     return;
-  tiler_->SetTilingRect(new_tiling_rect);
+  tiler_->SetTilingSize(new_tiling_size);
 
   // Invalidate any areas that the new bounds exposes.
-  Region old_region = old_tiling_rect;
-  Region new_region = new_tiling_rect;
-  new_tiling_rect.Subtract(old_tiling_rect);
-  for (Region::Iterator new_rects(new_tiling_rect); new_rects.has_rect();
+  Region new_region =
+      SubtractRegions(gfx::Rect(new_tiling_size), gfx::Rect(old_tiling_size));
+  for (Region::Iterator new_rects(new_region); new_rects.has_rect();
        new_rects.next())
     InvalidateContentRect(new_rects.rect());
 }
 
 void TiledLayer::SetTileSize(const gfx::Size& size) {
   tiler_->SetTileSize(size);
 }
 
 void TiledLayer::SetBorderTexelOption(
     LayerTilingData::BorderTexelOption border_texel_option) {
@@ skipping 727 matching lines @@
   gfx::Rect prepaint_rect = visible_content_rect();
   prepaint_rect.Inset(-tiler_->tile_size().width() * kPrepaintColumns,
                       -tiler_->tile_size().height() * kPrepaintRows);
   gfx::Rect content_rect(content_bounds());
   prepaint_rect.Intersect(content_rect);
 
   return prepaint_rect;
 }
 
 }  // namespace cc