cc: Implement states for Task for stricter control.

cc/raster/tile_task_worker_pool_unittest.cc

 // Copyright 2013 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.
 
 #include "cc/raster/tile_task_worker_pool.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 60 matching lines @@
   }
 
   // Overridden from TileTask:
   void ScheduleOnOriginThread(RasterBufferProvider* provider) override {
     // The raster buffer has no tile ids associated with it for partial update,
     // so doesn't need to provide a valid dirty rect.
     raster_buffer_ = provider->AcquireBufferForRaster(resource_, 0, 0);
   }
   void CompleteOnOriginThread(RasterBufferProvider* provider) override {
     provider->ReleaseBufferForRaster(std::move(raster_buffer_));
-    reply_.Run(!HasFinishedRunning());
+    reply_.Run(!state().IsFinished());
   }
 
  protected:
   ~TestRasterTaskImpl() override {}
 
  private:
   const Resource* resource_;
   const Reply reply_;
   std::unique_ptr<RasterBuffer> raster_buffer_;
   scoped_refptr<RasterSource> raster_source_;
@@ skipping 276 matching lines @@
 
 INSTANTIATE_TEST_CASE_P(TileTaskWorkerPoolTests,
                         TileTaskWorkerPoolTest,
                         ::testing::Values(TILE_TASK_WORKER_POOL_TYPE_ZERO_COPY,
                                           TILE_TASK_WORKER_POOL_TYPE_ONE_COPY,
                                           TILE_TASK_WORKER_POOL_TYPE_GPU,
                                           TILE_TASK_WORKER_POOL_TYPE_BITMAP));
 
 }  // namespace
 }  // namespace cc