Make base compile with no "using base::FilePath".

base/command_line.cc

 // 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.
 
 #include "base/command_line.h"
 
 #include <algorithm>
 #include <ostream>
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "base/strings/string_split.h"
 #include "base/utf_string_conversions.h"
 #include "build/build_config.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <shellapi.h>
 #endif
 
+using base::FilePath;
+
 CommandLine* CommandLine::current_process_commandline_ = NULL;
 
 namespace {
 const CommandLine::CharType kSwitchTerminator[] = FILE_PATH_LITERAL("--");
 const CommandLine::CharType kSwitchValueSeparator[] = FILE_PATH_LITERAL("=");
 // Since we use a lazy match, make sure that longer versions (like "--") are
 // listed before shorter versions (like "-") of similar prefixes.
 #if defined(OS_WIN)
 const CommandLine::CharType* const kSwitchPrefixes[] = {L"--", L"-", L"/"};
 #elif defined(OS_POSIX)
@@ skipping 374 matching lines @@
   int num_args = 0;
   wchar_t** args = NULL;
   args = ::CommandLineToArgvW(command_line_string.c_str(), &num_args);
 
   DPLOG_IF(FATAL, !args) << "CommandLineToArgvW failed on command line: "
                          << command_line;
   InitFromArgv(num_args, args);
   LocalFree(args);
 }
 #endif