CommandLine: add a CopySwitchesFrom() for copying from another CommandLine

chrome/browser/utility_process_host.cc

 // Copyright (c) 2009 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 "chrome/browser/utility_process_host.h"
 
 #include "app/app_switches.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/message_loop.h"
@@ skipping 62 matching lines @@
 
   FilePath exe_path = GetUtilityProcessCmd();
   if (exe_path.empty()) {
     NOTREACHED() << "Unable to get utility process binary name.";
     return false;
   }
 
   CommandLine* cmd_line = new CommandLine(exe_path);
   cmd_line->AppendSwitchWithValue(switches::kProcessType,
                                   switches::kUtilityProcess);
-  cmd_line->AppendSwitchWithValue(switches::kProcessChannelID,
-                                  ASCIIToWide(channel_id()));
+  cmd_line->AppendSwitchWithValue(switches::kProcessChannelID, channel_id());
   std::string locale = g_browser_process->GetApplicationLocale();
   cmd_line->AppendSwitchWithValue(switches::kLang, locale);
 
   SetCrashReporterCommandLine(cmd_line);
 
   const CommandLine& browser_command_line = *CommandLine::ForCurrentProcess();
   if (browser_command_line.HasSwitch(switches::kChromeFrame))
     cmd_line->AppendSwitch(switches::kChromeFrame);
 
   if (browser_command_line.HasSwitch(switches::kEnableApps))
@@ skipping 12 matching lines @@
   // Linux updating.
   bool has_cmd_prefix = browser_command_line.HasSwitch(
       switches::kUtilityCmdPrefix);
   if (has_cmd_prefix) {
     // launch the utility child process with some prefix (usually "xterm -e gdb
     // --args").
     cmd_line->PrependWrapper(browser_command_line.GetSwitchValue(
         switches::kUtilityCmdPrefix));
   }
 
-  cmd_line->AppendSwitchWithValue(switches::kUtilityProcessAllowedDir,
-                                  exposed_dir.value().c_str());
+  cmd_line->AppendSwitchPath(switches::kUtilityProcessAllowedDir, exposed_dir);
 #endif
 
   Launch(
 #if defined(OS_WIN)
       exposed_dir,
 #elif defined(OS_POSIX)
       false,
       base::environment_vector(),
 #endif
       cmd_line);
@@ skipping 27 matching lines @@
     IPC_MESSAGE_HANDLER(UtilityHostMsg_ParseUpdateManifest_Succeeded,
                         Client::OnParseUpdateManifestSucceeded)
     IPC_MESSAGE_HANDLER(UtilityHostMsg_ParseUpdateManifest_Failed,
                         Client::OnParseUpdateManifestFailed)
     IPC_MESSAGE_HANDLER(UtilityHostMsg_DecodeImage_Succeeded,
                         Client::OnDecodeImageSucceeded)
     IPC_MESSAGE_HANDLER(UtilityHostMsg_DecodeImage_Failed,
                         Client::OnDecodeImageFailed)
   IPC_END_MESSAGE_MAP_EX()
 }