Remove stl_util's deletion functions from storage/.

storage/browser/fileapi/copy_or_move_operation_delegate.h

Index: storage/browser/fileapi/copy_or_move_operation_delegate.h
diff --git a/storage/browser/fileapi/copy_or_move_operation_delegate.h b/storage/browser/fileapi/copy_or_move_operation_delegate.h
index a853b781124cc73fab6dfc8cf373d1a2f3bc9cad..9d5bd243a933c08c8c4df3b4dae13001e96e84de 100644
--- a/storage/browser/fileapi/copy_or_move_operation_delegate.h
+++ b/storage/browser/fileapi/copy_or_move_operation_delegate.h
@@ -7,8 +7,8 @@
 
 #include <stdint.h>
 
+#include <map>
 #include <memory>
-#include <set>
 #include <stack>
 
 #include "base/macros.h"
@@ -156,7 +156,7 @@ class CopyOrMoveOperationDelegate
   CopyProgressCallback progress_callback_;
   StatusCallback callback_;
 
-  std::set<CopyOrMoveImpl*> running_copy_set_;
+  std::map<CopyOrMoveImpl*, std::unique_ptr<CopyOrMoveImpl>> running_copy_set_;
   base::WeakPtrFactory<CopyOrMoveOperationDelegate> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CopyOrMoveOperationDelegate);