cc: Remove and Create the correct tiles when resizing live tiles rect

cc/base/tiling_data.h

 // 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.
 
 #ifndef CC_BASE_TILING_DATA_H_
 #define CC_BASE_TILING_DATA_H_
 
 #include <utility>
 
 #include "base/basictypes.h"
@@ skipping 85 matching lines @@
              const gfx::Rect& consider_rect,
              bool include_borders);
     Iterator& operator++();
 
    private:
     int left_;
     int right_;
     int bottom_;
   };
 
-  // Iterate through all indices whose bounds + border intersect with
+  // Iterate through all indices whose bounds intersect with
   // |consider| but which also do not intersect with |ignore|.
+  // When |include_borders| is true, consider the tile bounds including
+  // their borders.
   class CC_EXPORT DifferenceIterator : public BaseIterator {
    public:
-    DifferenceIterator(
-      const TilingData* tiling_data,
-      const gfx::Rect& consider_rect,
-      const gfx::Rect& ignore_rect);
+    DifferenceIterator(const TilingData* tiling_data,
+                       const gfx::Rect& consider_rect,
+                       const gfx::Rect& ignore_rect,
+                       bool include_borders);
     DifferenceIterator& operator++();
 
    private:
     bool in_ignore_rect() const {
      return index_x_ >= ignore_left_ && index_x_ <= ignore_right_ &&
        index_y_ >= ignore_top_ && index_y_ <= ignore_bottom_;
     }
 
     int consider_left_;
     int consider_top_;
@@ skipping 75 matching lines @@
   int border_texels_;
 
   // These are computed values.
   int num_tiles_x_;
   int num_tiles_y_;
 };
 
 }  // namespace cc
 
 #endif  // CC_BASE_TILING_DATA_H_