Replace ToLower calls to the new format

chrome/app/chrome_main_delegate.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 "chrome/app/chrome_main_delegate.h"
 
 #include "base/base_paths.h"
 #include "base/command_line.h"
 #include "base/cpu.h"
 #include "base/files/file_path.h"
@@ skipping 134 matching lines @@
 
 extern int NaClMain(const content::MainFunctionParams&);
 extern int ServiceProcessMain(const content::MainFunctionParams&);
 
 namespace {
 
 #if defined(OS_WIN)
 // Early versions of Chrome incorrectly registered a chromehtml: URL handler,
 // which gives us nothing but trouble. Avoid launching chrome this way since
 // some apps fail to properly escape arguments.
-bool HasDeprecatedArguments(const std::wstring& command_line) {
+bool HasDeprecatedArguments(const base::string16& command_line) {
   const wchar_t kChromeHtml[] = L"chromehtml:";
-  std::wstring command_line_lower = command_line;
+  base::string16 command_line_lower = base::ToLowerASCII(command_line);
   // We are only searching for ASCII characters so this is OK.
-  base::StringToLowerASCII(&command_line_lower);
-  std::wstring::size_type pos = command_line_lower.find(kChromeHtml);
-  return (pos != std::wstring::npos);
+  return (command_line_lower.find(kChromeHtml) != base::string16::npos);
 }
 
 // If we try to access a path that is not currently available, we want the call
 // to fail rather than show an error dialog.
 void SuppressWindowsErrorDialogs() {
   UINT new_flags = SEM_FAILCRITICALERRORS |
                    SEM_NOOPENFILEERRORBOX;
 
   // Preserve existing error mode.
   UINT existing_flags = SetErrorMode(new_flags);
@@ skipping 802 matching lines @@
     case version_info::Channel::CANARY:
       return true;
     case version_info::Channel::DEV:
     case version_info::Channel::BETA:
     case version_info::Channel::STABLE:
     default:
       // Don't enable instrumentation.
       return false;
   }
 }