Remove the default format from ResourcePool.

cc/resources/one_copy_tile_task_worker_pool.h

Index: cc/resources/one_copy_tile_task_worker_pool.h
diff --git a/cc/resources/one_copy_tile_task_worker_pool.h b/cc/resources/one_copy_tile_task_worker_pool.h
index c5b30baec4d4c62c3d3a7a624268a8ea0f5bc607..697879374d613885f09dd2d49580e73cbb34df28 100644
--- a/cc/resources/one_copy_tile_task_worker_pool.h
+++ b/cc/resources/one_copy_tile_task_worker_pool.h
@@ -42,6 +42,7 @@ class CC_EXPORT OneCopyTileTaskWorkerPool : public TileTaskWorkerPool,
 
   // Overridden from TileTaskWorkerPool:
   TileTaskRunner* AsTileTaskRunner() override;
+  ResourceFormat GetResourceFormat() override;
 
   // Overridden from TileTaskRunner:
   void SetClient(TileTaskRunnerClient* client) override;
@@ -106,6 +107,7 @@ class CC_EXPORT OneCopyTileTaskWorkerPool : public TileTaskWorkerPool,
   ContextProvider* context_provider_;
   ResourceProvider* resource_provider_;
   ResourcePool* resource_pool_;
+  ResourceFormat resource_format_;

[reveman, 2015/01/22 23:01:46]

is this member variable needed? just use
resource_provider->best_texture_format() without caching the result instead?

[peterp, 2015/01/23 13:19:06]

Alright. Done.

   TaskSetCollection tasks_pending_;
   scoped_refptr<TileTask> task_set_finished_tasks_[kNumberOfTaskSets];
   CopySequenceNumber last_issued_copy_operation_;