Remove parts of //cc we aren't using

cc/layers/picture_layer_impl.h

Index: cc/layers/picture_layer_impl.h
diff --git a/cc/layers/picture_layer_impl.h b/cc/layers/picture_layer_impl.h
deleted file mode 100644
index bd13949c4fe7bfb7b97501ce8a228de7dc601361..0000000000000000000000000000000000000000
--- a/cc/layers/picture_layer_impl.h
+++ /dev/null
@@ -1,193 +0,0 @@
-// 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_LAYERS_PICTURE_LAYER_IMPL_H_
-#define CC_LAYERS_PICTURE_LAYER_IMPL_H_
-
-#include <map>
-#include <string>
-#include <vector>
-
-#include "cc/base/cc_export.h"
-#include "cc/base/scoped_ptr_vector.h"
-#include "cc/layers/layer_impl.h"
-#include "cc/resources/picture_layer_tiling.h"
-#include "cc/resources/picture_layer_tiling_set.h"
-#include "cc/resources/picture_pile_impl.h"
-#include "cc/resources/tiling_set_eviction_queue.h"
-#include "skia/ext/refptr.h"
-#include "third_party/skia/include/core/SkPicture.h"
-
-namespace cc {
-
-struct AppendQuadsData;
-class MicroBenchmarkImpl;
-class Tile;
-
-class CC_EXPORT PictureLayerImpl
-    : public LayerImpl,
-      NON_EXPORTED_BASE(public PictureLayerTilingClient) {
- public:
-  struct CC_EXPORT Pair {
-    Pair();
-    Pair(PictureLayerImpl* active_layer, PictureLayerImpl* pending_layer);
-    ~Pair();
-
-    PictureLayerImpl* active;
-    PictureLayerImpl* pending;
-  };
-
-  static scoped_ptr<PictureLayerImpl> Create(
-      LayerTreeImpl* tree_impl,
-      int id,
-      bool is_mask,
-      scoped_refptr<SyncedScrollOffset> scroll_offset) {
-    return make_scoped_ptr(
-        new PictureLayerImpl(tree_impl, id, is_mask, scroll_offset));
-  }
-  ~PictureLayerImpl() override;
-
-  bool is_mask() const { return is_mask_; }
-
-  // LayerImpl overrides.
-  const char* LayerTypeAsString() const override;
-  scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
-  void PushPropertiesTo(LayerImpl* layer) override;
-  void AppendQuads(RenderPass* render_pass,
-                   AppendQuadsData* append_quads_data) override;
-  void NotifyTileStateChanged(const Tile* tile) override;
-  void DidBeginTracing() override;
-  void ReleaseResources() override;
-  void RecreateResources() override;
-  skia::RefPtr<SkPicture> GetPicture() override;
-  Region GetInvalidationRegion() override;
-
-  // PictureLayerTilingClient overrides.
-  scoped_refptr<Tile> CreateTile(float contents_scale,
-                                 const gfx::Rect& content_rect) override;
-  gfx::Size CalculateTileSize(const gfx::Size& content_bounds) const override;
-  const Region* GetPendingInvalidation() override;
-  const PictureLayerTiling* GetPendingOrActiveTwinTiling(
-      const PictureLayerTiling* tiling) const override;
-  PictureLayerTiling* GetRecycledTwinTiling(
-      const PictureLayerTiling* tiling) override;
-  TilePriority::PriorityBin GetMaxTilePriorityBin() const override;
-  WhichTree GetTree() const override;
-  bool RequiresHighResToDraw() const override;
-  gfx::Rect GetEnclosingRectInTargetSpace() const override;
-
-  void set_gpu_raster_max_texture_size(gfx::Size gpu_raster_max_texture_size) {
-    gpu_raster_max_texture_size_ = gpu_raster_max_texture_size;
-  }
-  void UpdateRasterSource(scoped_refptr<RasterSource> raster_source,
-                          Region* new_invalidation,
-                          const PictureLayerTilingSet* pending_set);
-  bool UpdateTiles(bool resourceless_software_draw);
-  void UpdateCanUseLCDTextAfterCommit();
-  bool RasterSourceUsesLCDText() const;
-
-  // Mask-related functions.
-  void GetContentsResourceId(ResourceProvider::ResourceId* resource_id,
-                             gfx::Size* resource_size) const override;
-
-  void SetNearestNeighbor(bool nearest_neighbor);
-
-  size_t GPUMemoryUsageInBytes() const override;
-
-  void RunMicroBenchmark(MicroBenchmarkImpl* benchmark) override;
-
-  bool CanHaveTilings() const;
-
-  PictureLayerTilingSet* picture_layer_tiling_set() { return tilings_.get(); }
-
-  // Functions used by tile manager.
-  PictureLayerImpl* GetPendingOrActiveTwinLayer() const;
-  bool IsOnActiveOrPendingTree() const;
-  // Virtual for testing.
-  virtual bool HasValidTilePriorities() const;
-
-  // Used for benchmarking
-  RasterSource* GetRasterSource() const { return raster_source_.get(); }
-
- protected:
-  friend class LayerRasterTileIterator;
-  using TileRequirementCheck = bool (PictureLayerTiling::*)(const Tile*) const;
-
-  PictureLayerImpl(LayerTreeImpl* tree_impl,
-                   int id,
-                   bool is_mask,
-                   scoped_refptr<SyncedScrollOffset> scroll_offset);
-  PictureLayerTiling* AddTiling(float contents_scale);
-  void RemoveAllTilings();
-  void AddTilingsForRasterScale();
-  virtual bool ShouldAdjustRasterScale() const;
-  virtual void RecalculateRasterScales();
-  void CleanUpTilingsOnActiveLayer(
-      const std::vector<PictureLayerTiling*>& used_tilings);
-  float MinimumContentsScale() const;
-  float MaximumContentsScale() const;
-  void ResetRasterScale();
-  void UpdateViewportRectForTilePriorityInContentSpace();
-  PictureLayerImpl* GetRecycledTwinLayer() const;
-
-  void SanityCheckTilingState() const;
-  bool ShouldAdjustRasterScaleDuringScaleAnimations() const;
-
-  void GetDebugBorderProperties(SkColor* color, float* width) const override;
-  void GetAllTilesAndPrioritiesForTracing(
-      std::map<const Tile*, TilePriority>* tile_map) const override;
-  void AsValueInto(base::trace_event::TracedValue* dict) const override;
-
-  virtual void UpdateIdealScales();
-  float MaximumTilingContentsScale() const;
-  scoped_ptr<PictureLayerTilingSet> CreatePictureLayerTilingSet();
-
-  PictureLayerImpl* twin_layer_;
-
-  scoped_ptr<PictureLayerTilingSet> tilings_;
-  scoped_refptr<RasterSource> raster_source_;
-  Region invalidation_;
-
-  float ideal_page_scale_;
-  float ideal_device_scale_;
-  float ideal_source_scale_;
-  float ideal_contents_scale_;
-
-  float raster_page_scale_;
-  float raster_device_scale_;
-  float raster_source_scale_;
-  float raster_contents_scale_;
-  float low_res_raster_contents_scale_;
-
-  bool raster_source_scale_is_fixed_;
-  bool was_screen_space_transform_animating_;
-  bool only_used_low_res_last_append_quads_;
-  const bool is_mask_;
-
-  bool nearest_neighbor_;
-
-  // Any draw properties derived from |transform|, |viewport|, and |clip|
-  // parameters in LayerTreeHostImpl::SetExternalDrawConstraints are not valid
-  // for prioritizing tiles during resourceless software draws. This is because
-  // resourceless software draws can have wildly different transforms/viewports
-  // from regular draws. Save a copy of the required draw properties of the last
-  // frame that has a valid viewport for prioritizing tiles.
-  gfx::Rect visible_rect_for_tile_priority_;
-  gfx::Rect viewport_rect_for_tile_priority_in_content_space_;
-
-  gfx::Size gpu_raster_max_texture_size_;
-
-  // List of tilings that were used last time we appended quads. This can be
-  // used as an optimization not to remove tilings if they are still being
-  // drawn. Note that accessing this vector should only be done in the context
-  // of comparing pointers, since objects pointed to are not guaranteed to
-  // exist.
-  std::vector<PictureLayerTiling*> last_append_quads_tilings_;
-
-  DISALLOW_COPY_AND_ASSIGN(PictureLayerImpl);
-};
-
-}  // namespace cc
-
-#endif  // CC_LAYERS_PICTURE_LAYER_IMPL_H_