cc: Remove invalidation history

cc/resources/picture_pile_impl.h

 // Copyright 2012 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_RESOURCES_PICTURE_PILE_IMPL_H_
 #define CC_RESOURCES_PICTURE_PILE_IMPL_H_
 
 #include <map>
 #include <set>
 #include <vector>
@@ skipping 78 matching lines @@
     gfx::Rect layer_rect_;
     TilingData::Iterator tile_iterator_;
     PixelRefMap::Iterator pixel_ref_iterator_;
     std::set<const void*> processed_pictures_;
   };
 
  protected:
   friend class PicturePile;
   friend class PixelRefIterator;
 
-  // TODO(vmpstr): Change this when pictures are split from invalidation info.
   using PictureMapKey = PicturePile::PictureMapKey;
   using PictureMap = PicturePile::PictureMap;
-  using PictureInfo = PicturePile::PictureInfo;
 
   PicturePileImpl();
   explicit PicturePileImpl(const PicturePile* other, bool can_use_lcd_text);
   explicit PicturePileImpl(const PicturePileImpl* other, bool can_use_lcd_text);
   ~PicturePileImpl() override;
 
   int buffer_pixels() const { return tiling_.border_texels(); }
 
   // These members are const as this raster source may be in use on another
   // thread and so should not be touched after construction.
@@ skipping 37 matching lines @@
   bool CanRasterSlowTileCheck(const gfx::Rect& layer_rect) const;
 
   gfx::Rect PaddedRect(const PictureMapKey& key) const;
 
   DISALLOW_COPY_AND_ASSIGN(PicturePileImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_PICTURE_PILE_IMPL_H_