cc: Add PictureLayerTilingSet to manage PictureLayerTiling

cc/tile_manager.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_TILE_MANAGER_H_
 #define CC_TILE_MANAGER_H_
 
 #include <vector>
 
 #include "base/values.h"
 #include "cc/layer_tree_host_impl.h"
 #include "cc/tile_priority.h"
 
 namespace cc {
 
 class Tile;
 class TileVersion;
 class ResourceProvider;
 
-class TileManagerClient {
+class CC_EXPORT TileManagerClient {
  public:
   virtual void ScheduleManageTiles() = 0;
 
  protected:
   virtual ~TileManagerClient() {}
 };
 
 // Tile manager classifying tiles into a few basic
 // bins:
 enum TileManagerBin {
   NOW_BIN = 0, // Needed ASAP.
   SOON_BIN = 1, // Impl-side version of prepainting.
   EVENTUALLY_BIN = 2, // Nice to have, if we've got memory and time.
   NEVER_BIN = 3, // Dont bother.
   NUM_BINS = 4
 };
 
 // This is state that is specific to a tile that is
 // managed by the TileManager.
-class ManagedTileState {
+class CC_EXPORT ManagedTileState {
  public:
   ManagedTileState()
     : can_use_gpu_memory(false)
     , resource_id(0)
     , resource_id_can_be_freed(0) {}
 
   // Persisted state: valid all the time.
   bool can_use_gpu_memory;
   ResourceProvider::ResourceId resource_id;
   bool resource_id_can_be_freed;
 
   // Ephemeral state, valid only during Manage.
   TileManagerBin bin;
   TileResolution resolution;
   float time_to_needed_in_seconds;
 };
 
 // This class manages tiles, deciding which should get rasterized and which
 // should no longer have any memory assigned to them. Tile objects are "owned"
 // by layers; they automatically register with the manager when they are
 // created, and unregister from the manager when they are deleted.
-class TileManager {
+class CC_EXPORT TileManager {
  public:
   TileManager(TileManagerClient* client);
   ~TileManager();
 
   void SetGlobalState(const GlobalStateThatImpactsTilePriority& state);
   void ManageTiles();
 
  protected:
   // Methods called by Tile
   friend class Tile;
@@ skipping 12 matching lines @@
   GlobalStateThatImpactsTilePriority global_state_;
 
   typedef std::vector<Tile*> TileVector;
   TileVector tiles_;
   TileVector tiles_that_need_to_be_painted_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TILE_MANAGER_H_