Convert //cc from scoped_ptr to std::unique_ptr.

cc/raster/one_copy_tile_task_worker_pool.h

Index: cc/raster/one_copy_tile_task_worker_pool.h
diff --git a/cc/raster/one_copy_tile_task_worker_pool.h b/cc/raster/one_copy_tile_task_worker_pool.h
index c4614b1ac75036ddcc576c8aeeeb61dabaa904c1..e362bdd0eaf408fb7ca6f64bc58e77852990f207 100644
--- a/cc/raster/one_copy_tile_task_worker_pool.h
+++ b/cc/raster/one_copy_tile_task_worker_pool.h
@@ -24,7 +24,7 @@ class CC_EXPORT OneCopyTileTaskWorkerPool : public TileTaskWorkerPool,
  public:
   ~OneCopyTileTaskWorkerPool() override;
 
-  static scoped_ptr<TileTaskWorkerPool> Create(
+  static std::unique_ptr<TileTaskWorkerPool> Create(
       base::SequencedTaskRunner* task_runner,
       TaskGraphRunner* task_graph_runner,
       ContextProvider* context_provider,
@@ -45,11 +45,11 @@ class CC_EXPORT OneCopyTileTaskWorkerPool : public TileTaskWorkerPool,
   bool GetResourceRequiresSwizzle(bool must_support_alpha) const override;
 
   // Overridden from TileTaskClient:
-  scoped_ptr<RasterBuffer> AcquireBufferForRaster(
+  std::unique_ptr<RasterBuffer> AcquireBufferForRaster(
       const Resource* resource,
       uint64_t resource_content_id,
       uint64_t previous_content_id) override;
-  void ReleaseBufferForRaster(scoped_ptr<RasterBuffer> buffer) override;
+  void ReleaseBufferForRaster(std::unique_ptr<RasterBuffer> buffer) override;
 
   // Playback raster source and copy result into |resource|.
   void PlaybackAndCopyOnWorkerThread(
@@ -100,7 +100,7 @@ class CC_EXPORT OneCopyTileTaskWorkerPool : public TileTaskWorkerPool,
   int bytes_scheduled_since_last_flush_;
 
   ResourceFormat preferred_tile_format_;
-  scoped_ptr<StagingBufferPool> staging_pool_;
+  std::unique_ptr<StagingBufferPool> staging_pool_;
 
   Task::Vector completed_tasks_;