Add a flag to disable partial raster in renderer

cc/tiles/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_TILES_TILE_MANAGER_H_
 #define CC_TILES_TILE_MANAGER_H_
 
 #include <deque>
 #include <queue>
 #include <set>
@@ skipping 89 matching lines @@
     // Adding additional values requires increasing kNumberOfTaskSets in
     // tile_task_runner.h
   };
 
   static_assert(NamedTaskSet::ALL == (kNumberOfTaskSets - 1),
                 "NamedTaskSet::ALL should be equal to kNumberOfTaskSets"
                 "minus 1");
 
   static scoped_ptr<TileManager> Create(TileManagerClient* client,
                                         base::SequencedTaskRunner* task_runner,
-                                        size_t scheduled_raster_task_limit);
+                                        size_t scheduled_raster_task_limit,
+                                        bool use_partial_raster);
   ~TileManager() override;
 
   // Assigns tile memory and schedules work to prepare tiles for drawing.
   // - Runs client_->NotifyReadyToActivate() when all tiles required for
   // activation are prepared, or failed to prepare due to OOM.
   // - Runs client_->NotifyReadyToDraw() when all tiles required draw are
   // prepared, or failed to prepare due to OOM.
   bool PrepareTiles(const GlobalStateThatImpactsTilePriority& state);
 
   // Synchronously finish any in progress work, cancel the rest, and clean up as
@@ skipping 77 matching lines @@
     all_tiles_that_need_to_be_rasterized_are_scheduled_ = false;
   }
 
   bool HasScheduledTileTasksForTesting() const {
     return has_scheduled_tile_tasks_;
   }
 
  protected:
   TileManager(TileManagerClient* client,
               const scoped_refptr<base::SequencedTaskRunner>& task_runner,
-              size_t scheduled_raster_task_limit);
+              size_t scheduled_raster_task_limit,
+              bool use_partial_raster);
 
   void FreeResourcesForReleasedTiles();
   void CleanUpReleasedTiles();
 
   friend class Tile;
   // Virtual for testing.
   virtual void Release(Tile* tile);
   Tile::Id GetUniqueTileId() { return ++next_tile_id_; }
 
   // Overriden from TileTaskRunnerClient:
@@ skipping 63 matching lines @@
 
   ResourceFormat DetermineResourceFormat(const Tile* tile) const;
   bool DetermineResourceRequiresSwizzle(const Tile* tile) const;
 
   TileManagerClient* client_;
   scoped_refptr<base::SequencedTaskRunner> task_runner_;
   ResourcePool* resource_pool_;
   TileTaskRunner* tile_task_runner_;
   GlobalStateThatImpactsTilePriority global_state_;
   size_t scheduled_raster_task_limit_;
+  const bool use_partial_raster_;
 
   typedef base::hash_map<Tile::Id, Tile*> TileMap;
   TileMap tiles_;
 
   bool all_tiles_that_need_to_be_rasterized_are_scheduled_;
   MemoryHistory::Entry memory_stats_from_last_assign_;
 
   bool did_check_for_completed_tasks_since_last_schedule_tasks_;
   bool did_oom_on_last_assign_;
 
@@ skipping 29 matching lines @@
 
   uint64_t prepare_tiles_count_;
   uint64_t next_tile_id_;
 
   DISALLOW_COPY_AND_ASSIGN(TileManager);
 };
 
 }  // namespace cc
 
 #endif  // CC_TILES_TILE_MANAGER_H_