Remove parts of //cc we aren't using

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>
-
-#include "base/time/time.h"
-#include "cc/base/cc_export.h"
-#include "cc/debug/rendering_stats_instrumentation.h"
-#include "cc/resources/picture_pile.h"
-#include "cc/resources/pixel_ref_map.h"
-#include "cc/resources/raster_source.h"
-#include "skia/ext/analysis_canvas.h"
-#include "skia/ext/refptr.h"
-
-class SkCanvas;
-class SkPicture;
-class SkPixelRef;
-
-namespace gfx {
-class Rect;
-}
-
-namespace cc {
-
-class CC_EXPORT PicturePileImpl : public RasterSource {
- public:
-  static scoped_refptr<PicturePileImpl> CreateFromPicturePile(
-      const PicturePile* other,
-      bool can_use_lcd_text);
-
-  // RasterSource overrides. See RasterSource header for full description.
-  // When slow-down-raster-scale-factor is set to a value greater than 1, the
-  // reported rasterize time (in stats_instrumentation) is the minimum measured
-  // value over all runs.
-  void PlaybackToCanvas(SkCanvas* canvas,
-                        const gfx::Rect& canvas_rect,
-                        float contents_scale) const override;
-  void PlaybackToSharedCanvas(SkCanvas* canvas,
-                              const gfx::Rect& canvas_rect,
-                              float contents_scale) const override;
-  void PerformSolidColorAnalysis(
-      const gfx::Rect& content_rect,
-      float contents_scale,
-      RasterSource::SolidColorAnalysis* analysis) const override;
-  void GatherPixelRefs(const gfx::Rect& content_rect,
-                       float contents_scale,
-                       std::vector<SkPixelRef*>* pixel_refs) const override;
-  bool CoversRect(const gfx::Rect& content_rect,
-                  float contents_scale) const override;
-  void SetShouldAttemptToUseDistanceFieldText() override;
-  bool ShouldAttemptToUseDistanceFieldText() const override;
-  gfx::Size GetSize() const override;
-  bool IsSolidColor() const override;
-  SkColor GetSolidColor() const override;
-  bool HasRecordings() const override;
-  bool CanUseLCDText() const override;
-  scoped_refptr<RasterSource> CreateCloneWithoutLCDText() const override;
-
-  // Tracing functionality.
-  void DidBeginTracing() override;
-  void AsValueInto(base::trace_event::TracedValue* array) const override;
-  skia::RefPtr<SkPicture> GetFlattenedPicture() override;
-  size_t GetPictureMemoryUsage() const override;
-
-  // Iterator used to return SkPixelRefs from this picture pile.
-  // Public for testing.
-  class CC_EXPORT PixelRefIterator {
-   public:
-    PixelRefIterator(const gfx::Rect& content_rect,
-                     float contents_scale,
-                     const PicturePileImpl* picture_pile);
-    ~PixelRefIterator();
-
-    SkPixelRef* operator->() const { return *pixel_ref_iterator_; }
-    SkPixelRef* operator*() const { return *pixel_ref_iterator_; }
-    PixelRefIterator& operator++();
-    operator bool() const { return pixel_ref_iterator_; }
-
-   private:
-    void AdvanceToTilePictureWithPixelRefs();
-
-    const PicturePileImpl* picture_pile_;
-    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.
-  const PictureMap picture_map_;
-  const TilingData tiling_;
-  const SkColor background_color_;
-  const bool requires_clear_;
-  const bool can_use_lcd_text_;
-  const bool is_solid_color_;
-  const SkColor solid_color_;
-  const gfx::Rect recorded_viewport_;
-  const bool has_any_recordings_;
-  const bool clear_canvas_with_debug_color_;
-  const float min_contents_scale_;
-  const int slow_down_raster_scale_factor_for_debug_;
-  // TODO(enne/vmiura): this has a read/write race between raster and compositor
-  // threads with multi-threaded Ganesh.  Make this const or remove it.
-  bool should_attempt_to_use_distance_field_text_;
-
- private:
-  typedef std::map<const Picture*, Region> PictureRegionMap;
-
-  // Called when analyzing a tile. We can use AnalysisCanvas as
-  // SkDrawPictureCallback, which allows us to early out from analysis.
-  void RasterForAnalysis(skia::AnalysisCanvas* canvas,
-                         const gfx::Rect& canvas_rect,
-                         float contents_scale) const;
-
-  void CoalesceRasters(const gfx::Rect& canvas_rect,
-                       const gfx::Rect& content_rect,
-                       float contents_scale,
-                       PictureRegionMap* result) const;
-
-  void RasterCommon(SkCanvas* canvas,
-                    SkDrawPictureCallback* callback,
-                    const gfx::Rect& canvas_rect,
-                    float contents_scale) const;
-
-  // An internal CanRaster check that goes to the picture_map rather than
-  // using the recorded_viewport hint.
-  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_