Move base::FreeDeleter into its own header.

base/memory/shared_memory_win_unittest.cc

 // Copyright 2016 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 <windows.h>
 #include <sddl.h>
 
 #include "base/command_line.h"
+#include "base/memory/free_deleter.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/shared_memory.h"
 #include "base/process/process.h"
 #include "base/rand_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/test/multiprocess_test.h"
 #include "base/test/test_timeouts.h"
 #include "base/win/scoped_handle.h"
 #include "base/win/win_util.h"
@@ skipping 193 matching lines @@
   WriteHandleToPipe(communication_pipe.Get(), raw_handle);
 
   int exit_code;
   EXPECT_TRUE(process.WaitForExitWithTimeout(TestTimeouts::action_max_timeout(),
                                              &exit_code));
   EXPECT_EQ(0, exit_code);
 }
 
 }  // namespace
 }  // namespace base