Update from chromium https://crrev.com/301725/

cc/resources/picture_pile_base.h

 // Copyright 2013 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_BASE_H_
 #define CC_RESOURCES_PICTURE_PILE_BASE_H_
 
 #include <bitset>
 #include <list>
 #include <utility>
 
 #include "base/containers/hash_tables.h"
-#include "base/memory/ref_counted.h"
 #include "cc/base/cc_export.h"
 #include "cc/base/region.h"
 #include "cc/base/tiling_data.h"
 #include "cc/resources/picture.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace base {
 namespace debug {
 class TracedValue;
 }
 class Value;
 }
 
 namespace cc {
 
-class CC_EXPORT PicturePileBase : public base::RefCounted<PicturePileBase> {
+class CC_EXPORT PicturePileBase {
  public:
   PicturePileBase();
   explicit PicturePileBase(const PicturePileBase* other);
 
   gfx::Size tiling_size() const { return tiling_.tiling_size(); }
   void SetMinContentsScale(float min_contents_scale);
 
   // If non-empty, all pictures tiles inside this rect are recorded. There may
   // be recordings outside this rect, but everything inside the rect is
   // recorded.
   gfx::Rect recorded_viewport() const { return recorded_viewport_; }
 
   int num_tiles_x() const { return tiling_.num_tiles_x(); }
   int num_tiles_y() const { return tiling_.num_tiles_y(); }
   gfx::Rect tile_bounds(int x, int y) const { return tiling_.TileBounds(x, y); }
   bool HasRecordingAt(int x, int y);
-  bool CanRaster(float contents_scale, const gfx::Rect& content_rect);
+  bool CanRaster(float contents_scale, const gfx::Rect& content_rect) const;
 
   // If this pile contains any valid recordings. May have false positives.
   bool HasRecordings() const { return has_any_recordings_; }
 
-  // If this pile has ever contained any recordings with text.
-  bool has_text() const { return has_text_; }
-
   bool is_solid_color() const { return is_solid_color_; }
   SkColor solid_color() const { return solid_color_; }
 
   void set_is_mask(bool is_mask) { is_mask_ = is_mask; }
   bool is_mask() const { return is_mask_; }
 
   static void ComputeTileGridInfo(const gfx::Size& tile_grid_size,
                                   SkTileGridFactory::TileGridInfo* info);
 
   void SetTileGridSize(const gfx::Size& tile_grid_size);
@@ skipping 57 matching lines @@
   SkTileGridFactory::TileGridInfo tile_grid_info_;
   SkColor background_color_;
   int slow_down_raster_scale_factor_for_debug_;
   bool contents_opaque_;
   bool contents_fill_bounds_completely_;
   bool show_debug_picture_borders_;
   bool clear_canvas_with_debug_color_;
   // A hint about whether there are any recordings. This may be a false
   // positive.
   bool has_any_recordings_;
-  bool has_text_;
   bool is_mask_;
   bool is_solid_color_;
   SkColor solid_color_;
 
  private:
   void SetBufferPixels(int buffer_pixels);
 
-  friend class base::RefCounted<PicturePileBase>;
   DISALLOW_COPY_AND_ASSIGN(PicturePileBase);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_PICTURE_PILE_BASE_H_