base: Fix an inefficiency in base::Pickle that caused extraneous allocations.

base/pickle.h

 // Copyright (c) 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 BASE_PICKLE_H_
 #define BASE_PICKLE_H_
 
 #include <string>
 
 #include "base/base_export.h"
@@ skipping 278 matching lines @@
   // Just like WriteBytes, but with a compile-time size, for performance.
   template<size_t length> void BASE_EXPORT WriteBytesStatic(const void* data);
 
   // Writes a POD by copying its bytes.
   template <typename T> bool WritePOD(const T& data) {
     WriteBytesStatic<sizeof(data)>(&data);
     return true;
   }
   inline void WriteBytesCommon(const void* data, size_t length);
 
+  FRIEND_TEST_ALL_PREFIXES(PickleTest, DeepCopyResize);
   FRIEND_TEST_ALL_PREFIXES(PickleTest, Resize);
   FRIEND_TEST_ALL_PREFIXES(PickleTest, FindNext);
   FRIEND_TEST_ALL_PREFIXES(PickleTest, FindNextWithIncompleteHeader);
   FRIEND_TEST_ALL_PREFIXES(PickleTest, FindNextOverflow);
 };
 
 }  // namespace base
 
 #endif  // BASE_PICKLE_H_