Remove GetSwitchValue() from chrome/* where easy.

chrome/installer/util/logging_installer.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.
 
 #include <windows.h>
 
 #include "chrome/installer/util/logging_installer.h"
 
 #include "base/command_line.h"
 #include "base/file_path.h"
@@ skipping 11 matching lines @@
 void InitInstallerLogging(const CommandLine& command_line) {
   if (installer_logging_)
     return;
 
   if (command_line.HasSwitch(
           WideToASCII(installer_util::switches::kDisableLogging))) {
     installer_logging_ = true;
     return;
   }
 
-  logging::InitLogging(GetLogFilePath(command_line).c_str(),
+  logging::InitLogging(GetLogFilePath(command_line).value().c_str(),
                        logging::LOG_ONLY_TO_FILE,
                        logging::LOCK_LOG_FILE,
                        logging::DELETE_OLD_LOG_FILE);
 
   if (command_line.HasSwitch(
           WideToASCII(installer_util::switches::kVerboseLogging))) {
     logging::SetMinLogLevel(logging::LOG_INFO);
   } else {
     logging::SetMinLogLevel(logging::LOG_ERROR);
   }
 
   installer_logging_ = true;
 }
 
 void EndInstallerLogging() {
   logging::CloseLogFile();
 
   installer_logging_ = false;
 }
 
-std::wstring GetLogFilePath(const CommandLine& command_line) {
+FilePath GetLogFilePath(const CommandLine& command_line) {
   if (command_line.HasSwitch(
           WideToASCII(installer_util::switches::kLogFile))) {
-    return command_line.GetSwitchValue(
+    return command_line.GetSwitchValuePath(
         WideToASCII(installer_util::switches::kLogFile));
   }
 
   std::wstring log_filename;
   if (command_line.HasSwitch(installer_util::switches::kChromeFrame)) {
     log_filename = L"chrome_frame_installer.log";
   } else {
     log_filename = L"chrome_installer.log";
   }
 
   FilePath log_path;
-
   if (PathService::Get(base::DIR_TEMP, &log_path)) {
     log_path = log_path.Append(log_filename);
-    return log_path.ToWStringHack();
+    return log_path;
   } else {
-    return log_filename;
+    return FilePath(log_filename);
   }
 }
 
 }  // namespace installer