Remove parts of //cc we aren't using

cc/resources/prioritized_resource.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_PRIORITIZED_RESOURCE_H_
-#define CC_RESOURCES_PRIORITIZED_RESOURCE_H_
-
-#include "base/basictypes.h"
-#include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
-#include "cc/base/cc_export.h"
-#include "cc/resources/resource.h"
-#include "cc/resources/resource_provider.h"
-#include "ui/gfx/geometry/rect.h"
-#include "ui/gfx/geometry/size.h"
-#include "ui/gfx/geometry/vector2d.h"
-
-namespace cc {
-
-class PrioritizedResourceManager;
-class Proxy;
-
-class CC_EXPORT PrioritizedResource {
- public:
-  static scoped_ptr<PrioritizedResource> Create(
-      PrioritizedResourceManager* manager,
-      const gfx::Size& size,
-      ResourceFormat format) {
-    return make_scoped_ptr(new PrioritizedResource(manager, size, format));
-  }
-  static scoped_ptr<PrioritizedResource> Create(
-      PrioritizedResourceManager* manager) {
-    return make_scoped_ptr(
-        new PrioritizedResource(manager, gfx::Size(), RGBA_8888));
-  }
-  ~PrioritizedResource();
-
-  // Texture properties. Changing these causes the backing texture to be lost.
-  // Setting these to the same value is a no-op.
-  void SetTextureManager(PrioritizedResourceManager* manager);
-  PrioritizedResourceManager* resource_manager() { return manager_; }
-  void SetDimensions(const gfx::Size& size, ResourceFormat format);
-  ResourceFormat format() const { return format_; }
-  gfx::Size size() const { return size_; }
-  size_t bytes() const { return bytes_; }
-  bool contents_swizzled() const { return contents_swizzled_; }
-
-  // Set priority for the requested texture.
-  void set_request_priority(int priority) { priority_ = priority; }
-  int request_priority() const { return priority_; }
-
-  // After PrioritizedResource::PrioritizeTextures() is called, this returns
-  // if the the request succeeded and this texture can be acquired for use.
-  bool can_acquire_backing_texture() const { return is_above_priority_cutoff_; }
-
-  // This returns whether we still have a backing texture. This can continue
-  // to be true even after CanAcquireBackingTexture() becomes false. In this
-  // case the texture can be used but shouldn't be updated since it will get
-  // taken away "soon".
-  bool have_backing_texture() const { return !!backing(); }
-
-  bool BackingResourceWasEvicted() const;
-
-  // If CanAcquireBackingTexture() is true AcquireBackingTexture() will acquire
-  // a backing texture for use. Call this whenever the texture is actually
-  // needed.
-  void AcquireBackingTexture(ResourceProvider* resource_provider);
-
-  // TODO(epenner): Request late is really a hack for when we are totally out of
-  // memory (all textures are visible) but we can still squeeze into the limit
-  // by not painting occluded textures. In this case the manager refuses all
-  // visible textures and RequestLate() will enable CanAcquireBackingTexture()
-  // on a call-order basis. We might want to just remove this in the future
-  // (carefully) and just make sure we don't regress OOMs situations.
-  bool RequestLate();
-
-  // Update pixels of backing resource from image. This functions will aquire
-  // the backing if needed.
-  void SetPixels(ResourceProvider* resource_provider,
-                 const uint8_t* image,
-                 const gfx::Rect& image_rect,
-                 const gfx::Rect& source_rect,
-                 const gfx::Vector2d& dest_offset);
-
-  ResourceProvider::ResourceId resource_id() const {
-    return backing_ ? backing_->id() : 0;
-  }
-
-  // Self-managed textures are accounted for when prioritizing other textures,
-  // but they are not allocated/recycled/deleted, so this needs to be done
-  // externally. CanAcquireBackingTexture() indicates if the texture would have
-  // been allowed given its priority.
-  void set_is_self_managed(bool is_self_managed) {
-    is_self_managed_ = is_self_managed;
-  }
-  bool is_self_managed() { return is_self_managed_; }
-  void SetToSelfManagedMemoryPlaceholder(size_t bytes);
-
-  void ReturnBackingTexture();
-
- private:
-  friend class PrioritizedResourceManager;
-  friend class PrioritizedResourceTest;
-
-  class Backing : public Resource {
-   public:
-    Backing(unsigned id,
-            ResourceProvider* resource_provider,
-            const gfx::Size& size,
-            ResourceFormat format);
-    ~Backing();
-    void UpdatePriority();
-    void UpdateState(ResourceProvider* resource_provider);
-
-    PrioritizedResource* owner() { return owner_; }
-    bool CanBeRecycledIfNotInExternalUse() const;
-    int request_priority_at_last_priority_update() const {
-      return priority_at_last_priority_update_;
-    }
-    bool was_above_priority_cutoff_at_last_priority_update() const {
-      return was_above_priority_cutoff_at_last_priority_update_;
-    }
-    bool in_drawing_impl_tree() const { return in_drawing_impl_tree_; }
-    bool in_parent_compositor() const { return in_parent_compositor_; }
-
-    void DeleteResource(ResourceProvider* resource_provider);
-    bool ResourceHasBeenDeleted() const;
-
-   private:
-    const Proxy* proxy() const;
-
-    friend class PrioritizedResource;
-    friend class PrioritizedResourceManager;
-    PrioritizedResource* owner_;
-    int priority_at_last_priority_update_;
-    bool was_above_priority_cutoff_at_last_priority_update_;
-
-    // Set if this is currently-drawing impl tree.
-    bool in_drawing_impl_tree_;
-    // Set if this is in the parent compositor.
-    bool in_parent_compositor_;
-
-    bool resource_has_been_deleted_;
-
-#if DCHECK_IS_ON()
-    ResourceProvider* resource_provider_;
-#endif
-    DISALLOW_COPY_AND_ASSIGN(Backing);
-  };
-
-  PrioritizedResource(PrioritizedResourceManager* resource_manager,
-                      const gfx::Size& size,
-                      ResourceFormat format);
-
-  bool is_above_priority_cutoff() { return is_above_priority_cutoff_; }
-  void set_above_priority_cutoff(bool is_above_priority_cutoff) {
-    is_above_priority_cutoff_ = is_above_priority_cutoff;
-  }
-  void set_manager_internal(PrioritizedResourceManager* manager) {
-    manager_ = manager;
-  }
-
-  Backing* backing() const { return backing_; }
-  void Link(Backing* backing);
-  void Unlink();
-
-  gfx::Size size_;
-  ResourceFormat format_;
-  size_t bytes_;
-  bool contents_swizzled_;
-
-  int priority_;
-  bool is_above_priority_cutoff_;
-  bool is_self_managed_;
-
-  Backing* backing_;
-  PrioritizedResourceManager* manager_;
-
-  DISALLOW_COPY_AND_ASSIGN(PrioritizedResource);
-};
-
-}  // namespace cc
-
-#endif  // CC_RESOURCES_PRIORITIZED_RESOURCE_H_