wstring: remove a needless wchar_t that is ASCII

chrome/browser/shell_integration_win.cc

 // Copyright (c) 2010 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/shell_integration.h"
 
 #include <windows.h>
 #include <shobjidl.h>
 #include <propkey.h>
 #include <propvarutil.h>
@@ skipping 30 matching lines @@
 std::wstring GetProfileIdFromPath(const FilePath& profile_path) {
   // Return empty string if profile_path is empty
   if (profile_path.empty())
     return std::wstring();
 
   FilePath default_user_data_dir;
   // Return empty string if profile_path is in default user data
   // dir and is the default profile.
   if (chrome::GetDefaultUserDataDirectory(&default_user_data_dir) &&
       profile_path.DirName() == default_user_data_dir &&
-      profile_path.BaseName().value() == chrome::kNotSignedInProfile)
+      profile_path.BaseName().value() ==
+          ASCIIToUTF16(chrome::kNotSignedInProfile)) {
     return std::wstring();
+  }
 
   // Get joined basenames of user data dir and profile.
   std::wstring basenames = profile_path.DirName().BaseName().value() +
       L"." + profile_path.BaseName().value();
 
   std::wstring profile_id;
   profile_id.reserve(basenames.size());
 
   // Generate profile_id from sanitized basenames.
   for (size_t i = 0; i < basenames.length(); ++i) {
@@ skipping 149 matching lines @@
                                       MAX_PATH)))
     return false;
 
   // Get expected app id from shortcut command line.
   CommandLine command_line = CommandLine::FromString(StringPrintf(
       L"\"%ls\" %ls", source.c_str(), arguments.c_str()));
 
   FilePath profile_path;
   if (command_line.HasSwitch(switches::kUserDataDir)) {
     profile_path =
-        command_line.GetSwitchValuePath(switches::kUserDataDir).Append(
+        command_line.GetSwitchValuePath(switches::kUserDataDir).AppendASCII(
             chrome::kNotSignedInProfile);
   }
 
   std::wstring app_name;
   if (command_line.HasSwitch(switches::kApp)) {
     app_name = UTF8ToWide(web_app::GenerateApplicationNameFromURL(
         GURL(command_line.GetSwitchValueASCII(switches::kApp))));
   } else if (command_line.HasSwitch(switches::kAppId)) {
     app_name = UTF8ToWide(web_app::GenerateApplicationNameFromExtensionId(
         command_line.GetSwitchValueASCII(switches::kAppId)));
@@ skipping 179 matching lines @@
                   profile_path);
 }
 
 void ShellIntegration::MigrateChromiumShortcuts() {
   if (base::win::GetVersion() < base::win::VERSION_WIN7)
     return;
 
   BrowserThread::PostTask(
       BrowserThread::FILE, FROM_HERE, new MigrateChromiumShortcutsTask());
 }