Remove deprecated CommandLine(std::wstring) ctor.

net/tools/crash_cache/crash_cache.cc

 // Copyright (c) 2006-2008 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.
 
 // This command-line program generates the set of files needed for the crash-
 // cache unit tests (DiskCacheTest,CacheBackend_Recover*). This program only
 // works properly on debug mode, because the crash functionality is not compiled
 // on release builds of the cache.
 
 #include <string>
@@ skipping 22 matching lines @@
   NOT_REACHED
 };
 
 using disk_cache::RankCrashes;
 
 // Starts a new process, to generate the files.
 int RunSlave(RankCrashes action) {
   FilePath exe;
   PathService::Get(base::FILE_EXE, &exe);
 
-  CommandLine cmdline(exe.ToWStringHack());
+  CommandLine cmdline(exe);
   cmdline.AppendLooseValue(ASCIIToWide(IntToString(action)));
 
   base::ProcessHandle handle;
   if (!base::LaunchApp(cmdline, false, false, &handle)) {
     printf("Unable to run test %d\n", action);
     return GENERIC;
   }
 
   int exit_code;
 
@@ skipping 248 matching lines @@
 
   FilePath path;
   PathService::Get(base::DIR_SOURCE_ROOT, &path);
   path = path.AppendASCII("net");
   path = path.AppendASCII("data");
   path = path.AppendASCII("cache_tests");
   path = path.AppendASCII("new_crashes");
 
   return SlaveCode(path, action);
 }