chrome/browser/chrome_browser_main_win.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/chrome_browser_main_win.h"
   6
   7 #include <windows.h>
   8 #include <shellapi.h>
   9
  10 #include <algorithm>
  11
  12 #include "base/command_line.h"
  13 #include "base/environment.h"
  14 #include "base/files/file_enumerator.h"
  15 #include "base/files/file_path.h"
  16 #include "base/files/file_util.h"
  17 #include "base/i18n/rtl.h"
  18 #include "base/location.h"
  19 #include "base/macros.h"
  20 #include "base/memory/scoped_ptr.h"
  21 #include "base/metrics/histogram.h"
  22 #include "base/path_service.h"
  23 #include "base/scoped_native_library.h"
  24 #include "base/strings/string_number_conversions.h"
  25 #include "base/strings/utf_string_conversions.h"
  26 #include "base/win/metro.h"
  27 #include "base/win/win_util.h"
  28 #include "base/win/windows_version.h"
  29 #include "base/win/wrapped_window_proc.h"
  30 #include "chrome/browser/browser_util_win.h"
  31 #include "chrome/browser/chrome_elf_init_win.h"
  32 #include "chrome/browser/first_run/first_run.h"
  33 #include "chrome/browser/install_verification/win/install_verification.h"
  34 #include "chrome/browser/prefs/incognito_mode_prefs.h"
  35 #include "chrome/browser/profiles/profile_info_cache.h"
  36 #include "chrome/browser/profiles/profile_shortcut_manager.h"
  37 #include "chrome/browser/shell_integration.h"
  38 #include "chrome/browser/ui/simple_message_box.h"
  39 #include "chrome/browser/ui/uninstall_browser_prompt.h"
  40 #include "chrome/chrome_watcher/chrome_watcher_main_api.h"
  41 #include "chrome/common/chrome_constants.h"
  42 #include "chrome/common/chrome_paths.h"
  43 #include "chrome/common/chrome_result_codes.h"
  44 #include "chrome/common/chrome_switches.h"
  45 #include "chrome/common/chrome_utility_messages.h"
  46 #include "chrome/common/chrome_version_info.h"
  47 #include "chrome/common/env_vars.h"
  48 #include "chrome/grit/chromium_strings.h"
  49 #include "chrome/grit/generated_resources.h"
  50 #include "chrome/installer/util/browser_distribution.h"
  51 #include "chrome/installer/util/helper.h"
  52 #include "chrome/installer/util/install_util.h"
  53 #include "chrome/installer/util/l10n_string_util.h"
  54 #include "chrome/installer/util/shell_util.h"
  55 #include "content/public/browser/browser_thread.h"
  56 #include "content/public/browser/utility_process_host.h"
  57 #include "content/public/browser/utility_process_host_client.h"
  58 #include "content/public/common/content_switches.h"
  59 #include "content/public/common/dwrite_font_platform_win.h"
  60 #include "content/public/common/main_function_params.h"
  61 #include "installer_util_strings/installer_util_strings.h"
  62 #include "ui/base/cursor/cursor_loader_win.h"
  63 #include "ui/base/l10n/l10n_util.h"
  64 #include "ui/base/l10n/l10n_util_win.h"
  65 #include "ui/base/ui_base_switches.h"
  66 #include "ui/base/win/message_box_win.h"
  67 #include "ui/gfx/platform_font_win.h"
  68 #include "ui/gfx/switches.h"
  69 #include "ui/gfx/win/direct_write.h"
  70 #include "ui/strings/grit/app_locale_settings.h"
  71
  72 #if defined(GOOGLE_CHROME_BUILD)
  73 #include "chrome/browser/google/did_run_updater_win.h"
  74 #endif
  75
  76 #if defined(KASKO)
  77 #include "syzygy/kasko/api/reporter.h"
  78 #endif
  79
  80 namespace {
  81
  82 typedef HRESULT (STDAPICALLTYPE* RegisterApplicationRestartProc)(
  83     const wchar_t* command_line,
  84     DWORD flags);
  85
  86 void InitializeWindowProcExceptions() {
  87   // Get the breakpad pointer from chrome.exe
  88   base::win::WinProcExceptionFilter exception_filter =
  89       reinterpret_cast<base::win::WinProcExceptionFilter>(
  90           ::GetProcAddress(::GetModuleHandle(
  91                                chrome::kBrowserProcessExecutableName),
  92                            "CrashForException"));
  93   exception_filter = base::win::SetWinProcExceptionFilter(exception_filter);
  94   DCHECK(!exception_filter);
  95 }
  96
  97 // gfx::Font callbacks
  98 void AdjustUIFont(LOGFONT* logfont) {
  99   l10n_util::AdjustUIFont(logfont);
 100 }
 101
 102 int GetMinimumFontSize() {
 103   int min_font_size;
 104   base::StringToInt(l10n_util::GetStringUTF16(IDS_MINIMUM_UI_FONT_SIZE),
 105                     &min_font_size);
 106   return min_font_size;
 107 }
 108
 109 class TranslationDelegate : public installer::TranslationDelegate {
 110  public:
 111   base::string16 GetLocalizedString(int installer_string_id) override;
 112 };
 113
 114 void ExecuteFontCacheBuildTask(const base::FilePath& path) {
 115   base::WeakPtr<content::UtilityProcessHost> utility_process_host(
 116       content::UtilityProcessHost::Create(NULL, NULL)->AsWeakPtr());
 117   utility_process_host->SetName(l10n_util::GetStringUTF16(
 118       IDS_UTILITY_PROCESS_FONT_CACHE_BUILDER_NAME));
 119   utility_process_host->DisableSandbox();
 120   utility_process_host->Send(
 121       new ChromeUtilityHostMsg_BuildDirectWriteFontCache(path));
 122 }
 123
 124 #if defined(KASKO)
 125 void ObserveFailedCrashReportDirectory(const base::FilePath& path, bool error) {
 126   DCHECK(!error);
 127   if (error)
 128     return;
 129   base::FileEnumerator enumerator(path, true, base::FileEnumerator::FILES);
 130   for (base::FilePath report_file = enumerator.Next(); !report_file.empty();
 131        report_file = enumerator.Next()) {
 132     if (report_file.Extension() ==
 133         kasko::api::kPermanentFailureMinidumpExtension) {
 134       UMA_HISTOGRAM_BOOLEAN("CrashReport.PermanentUploadFailure", true);
 135     }
 136     bool result = base::DeleteFile(report_file, false);
 137     DCHECK(result);
 138   }
 139 }
 140
 141 void StartFailedKaskoCrashReportWatcher(base::FilePathWatcher* watcher) {
 142   base::FilePath watcher_data_directory;
 143   if (!PathService::Get(chrome::DIR_WATCHER_DATA, &watcher_data_directory)) {
 144     NOTREACHED();
 145   } else {
 146     base::FilePath permanent_failure_directory =
 147         watcher_data_directory.Append(kPermanentlyFailedReportsSubdir);
 148     if (!watcher->Watch(permanent_failure_directory, true,
 149                         base::Bind(&ObserveFailedCrashReportDirectory))) {
 150       NOTREACHED();
 151     }
 152
 153     // Call it once to observe any files present prior to the Watch() call.
 154     ObserveFailedCrashReportDirectory(permanent_failure_directory, false);
 155   }
 156 }
 157 #endif
 158
 159 }  // namespace
 160
 161 void ShowCloseBrowserFirstMessageBox() {
 162   int message_id = IDS_UNINSTALL_CLOSE_APP;
 163   if (base::win::GetVersion() >= base::win::VERSION_WIN8 &&
 164       (ShellIntegration::GetDefaultBrowser() == ShellIntegration::IS_DEFAULT)) {
 165     message_id = IDS_UNINSTALL_CLOSE_APP_IMMERSIVE;
 166   }
 167   chrome::ShowMessageBox(NULL,
 168                          l10n_util::GetStringUTF16(IDS_PRODUCT_NAME),
 169                          l10n_util::GetStringUTF16(message_id),
 170                          chrome::MESSAGE_BOX_TYPE_WARNING);
 171 }
 172
 173 int DoUninstallTasks(bool chrome_still_running) {
 174   // We want to show a warning to user (and exit) if Chrome is already running
 175   // *before* we show the uninstall confirmation dialog box. But while the
 176   // uninstall confirmation dialog is up, user might start Chrome, so we
 177   // check once again after user acknowledges Uninstall dialog.
 178   if (chrome_still_running) {
 179     ShowCloseBrowserFirstMessageBox();
 180     return chrome::RESULT_CODE_UNINSTALL_CHROME_ALIVE;
 181   }
 182   int result = chrome::ShowUninstallBrowserPrompt();
 183   if (browser_util::IsBrowserAlreadyRunning()) {
 184     ShowCloseBrowserFirstMessageBox();
 185     return chrome::RESULT_CODE_UNINSTALL_CHROME_ALIVE;
 186   }
 187
 188   if (result != chrome::RESULT_CODE_UNINSTALL_USER_CANCEL) {
 189     // The following actions are just best effort.
 190     // TODO(gab): Look into removing this code which is now redundant with the
 191     // work done by setup.exe on uninstall.
 192     VLOG(1) << "Executing uninstall actions";
 193     base::FilePath chrome_exe;
 194     if (PathService::Get(base::FILE_EXE, &chrome_exe)) {
 195       ShellUtil::ShortcutLocation user_shortcut_locations[] = {
 196         ShellUtil::SHORTCUT_LOCATION_DESKTOP,
 197         ShellUtil::SHORTCUT_LOCATION_QUICK_LAUNCH,
 198         ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_DIR,
 199         ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_APPS_DIR,
 200       };
 201       BrowserDistribution* dist = BrowserDistribution::GetDistribution();
 202       for (size_t i = 0; i < arraysize(user_shortcut_locations); ++i) {
 203         if (!ShellUtil::RemoveShortcuts(user_shortcut_locations[i], dist,
 204                 ShellUtil::CURRENT_USER, chrome_exe)) {
 205           VLOG(1) << "Failed to delete shortcut at location "
 206                   << user_shortcut_locations[i];
 207         }
 208       }
 209     } else {
 210       NOTREACHED();
 211     }
 212   }
 213   return result;
 214 }
 215
 216 // ChromeBrowserMainPartsWin ---------------------------------------------------
 217
 218 ChromeBrowserMainPartsWin::ChromeBrowserMainPartsWin(
 219     const content::MainFunctionParams& parameters)
 220     : ChromeBrowserMainParts(parameters) {
 221   if (base::win::IsMetroProcess()) {
 222     typedef const wchar_t* (*GetMetroSwitches)(void);
 223     GetMetroSwitches metro_switches_proc = reinterpret_cast<GetMetroSwitches>(
 224         GetProcAddress(base::win::GetMetroModule(),
 225                        "GetMetroCommandLineSwitches"));
 226     if (metro_switches_proc) {
 227       base::string16 metro_switches = (*metro_switches_proc)();
 228       if (!metro_switches.empty()) {
 229         base::CommandLine extra_switches(base::CommandLine::NO_PROGRAM);
 230         extra_switches.ParseFromString(metro_switches);
 231         base::CommandLine::ForCurrentProcess()->AppendArguments(extra_switches,
 232                                                                 false);
 233       }
 234     }
 235   }
 236 }
 237
 238 ChromeBrowserMainPartsWin::~ChromeBrowserMainPartsWin() {
 239 }
 240
 241 void ChromeBrowserMainPartsWin::ToolkitInitialized() {
 242   ChromeBrowserMainParts::ToolkitInitialized();
 243   gfx::PlatformFontWin::adjust_font_callback = &AdjustUIFont;
 244   gfx::PlatformFontWin::get_minimum_font_size_callback = &GetMinimumFontSize;
 245   ui::CursorLoaderWin::SetCursorResourceModule(chrome::kBrowserResourcesDll);
 246 }
 247
 248 void ChromeBrowserMainPartsWin::PreMainMessageLoopStart() {
 249   // installer_util references strings that are normally compiled into
 250   // setup.exe.  In Chrome, these strings are in the locale files.
 251   SetupInstallerUtilStrings();
 252
 253   ChromeBrowserMainParts::PreMainMessageLoopStart();
 254   if (!parameters().ui_task) {
 255     // Make sure that we know how to handle exceptions from the message loop.
 256     InitializeWindowProcExceptions();
 257   }
 258
 259   // Prime the parental controls cache on Windows.
 260   ignore_result(IncognitoModePrefs::ArePlatformParentalControlsEnabled());
 261 }
 262
 263 int ChromeBrowserMainPartsWin::PreCreateThreads() {
 264   int rv = ChromeBrowserMainParts::PreCreateThreads();
 265
 266   // TODO(viettrungluu): why don't we run this earlier?
 267   if (!parsed_command_line().HasSwitch(switches::kNoErrorDialogs) &&
 268       base::win::GetVersion() < base::win::VERSION_XP) {
 269     chrome::ShowMessageBox(NULL,
 270         l10n_util::GetStringUTF16(IDS_PRODUCT_NAME),
 271         l10n_util::GetStringUTF16(IDS_UNSUPPORTED_OS_PRE_WIN_XP),
 272         chrome::MESSAGE_BOX_TYPE_WARNING);
 273   }
 274
 275   return rv;
 276 }
 277
 278 void ChromeBrowserMainPartsWin::ShowMissingLocaleMessageBox() {
 279   ui::MessageBox(NULL,
 280                  base::ASCIIToUTF16(chrome_browser::kMissingLocaleDataMessage),
 281                  base::ASCIIToUTF16(chrome_browser::kMissingLocaleDataTitle),
 282                  MB_OK | MB_ICONERROR | MB_TOPMOST);
 283 }
 284
 285 void ChromeBrowserMainPartsWin::PostProfileInit() {
 286   ChromeBrowserMainParts::PostProfileInit();
 287
 288   // DirectWrite support is mainly available Windows 7 and up.
 289   if (gfx::win::ShouldUseDirectWrite()) {
 290     base::FilePath path(
 291       profile()->GetPath().AppendASCII(content::kFontCacheSharedSectionName));
 292     // This function will create a read only section if cache file exists
 293     // otherwise it will spawn utility process to build cache file, which will
 294     // be used during next browser start/postprofileinit.
 295     if (!content::LoadFontCache(path)) {
 296       // We delay building of font cache until first startup page loads.
 297       // During first renderer start there are lot of things happening
 298       // simultaneously some of them are:
 299       // - Renderer is going through all font files on the system to create
 300       //   a font collection.
 301       // - Renderer loading up startup URL, accessing HTML/JS File cache,
 302       //   net activity etc.
 303       // - Extension initialization.
 304       // We delay building of cache mainly to avoid parallel font file
 305       // loading along with Renderer. Some systems have significant number of
 306       // font files which takes long time to process.
 307       // Related information is at http://crbug.com/436195.
 308       const int kBuildFontCacheDelaySec = 30;
 309       content::BrowserThread::PostDelayedTask(
 310           content::BrowserThread::IO,
 311           FROM_HERE,
 312           base::Bind(ExecuteFontCacheBuildTask, path),
 313           base::TimeDelta::FromSeconds(kBuildFontCacheDelaySec));
 314     }
 315   }
 316 }
 317
 318 void ChromeBrowserMainPartsWin::PostBrowserStart() {
 319   ChromeBrowserMainParts::PostBrowserStart();
 320
 321   UMA_HISTOGRAM_BOOLEAN("Windows.Tablet", base::win::IsTabletDevice());
 322
 323   // Set up a task to verify installed modules in the current process. Use a
 324   // delay to reduce the impact on startup time.
 325   content::BrowserThread::GetMessageLoopProxyForThread(
 326       content::BrowserThread::UI)->PostDelayedTask(
 327           FROM_HERE,
 328           base::Bind(&VerifyInstallation),
 329           base::TimeDelta::FromSeconds(45));
 330
 331   InitializeChromeElf();
 332
 333 #if defined(KASKO)
 334   content::BrowserThread::PostDelayedTask(
 335       content::BrowserThread::FILE, FROM_HERE,
 336       base::Bind(&StartFailedKaskoCrashReportWatcher,
 337                  base::Unretained(&failed_kasko_crash_report_watcher_)),
 338       base::TimeDelta::FromMinutes(5));
 339 #endif
 340
 341 #if defined(GOOGLE_CHROME_BUILD)
 342   did_run_updater_.reset(new DidRunUpdater);
 343 #endif
 344 }
 345
 346 // static
 347 void ChromeBrowserMainPartsWin::PrepareRestartOnCrashEnviroment(
 348     const base::CommandLine& parsed_command_line) {
 349   // Clear this var so child processes don't show the dialog by default.
 350   scoped_ptr<base::Environment> env(base::Environment::Create());
 351   env->UnSetVar(env_vars::kShowRestart);
 352
 353   // For non-interactive tests we don't restart on crash.
 354   if (env->HasVar(env_vars::kHeadless))
 355     return;
 356
 357   // If the known command-line test options are used we don't create the
 358   // environment block which means we don't get the restart dialog.
 359   if (parsed_command_line.HasSwitch(switches::kBrowserCrashTest) ||
 360       parsed_command_line.HasSwitch(switches::kNoErrorDialogs))
 361     return;
 362
 363   // The encoding we use for the info is "title|context|direction" where
 364   // direction is either env_vars::kRtlLocale or env_vars::kLtrLocale depending
 365   // on the current locale.
 366   base::string16 dlg_strings(
 367       l10n_util::GetStringUTF16(IDS_CRASH_RECOVERY_TITLE));
 368   dlg_strings.push_back('|');
 369   base::string16 adjusted_string(
 370       l10n_util::GetStringUTF16(IDS_CRASH_RECOVERY_CONTENT));
 371   base::i18n::AdjustStringForLocaleDirection(&adjusted_string);
 372   dlg_strings.append(adjusted_string);
 373   dlg_strings.push_back('|');
 374   dlg_strings.append(base::ASCIIToUTF16(
 375       base::i18n::IsRTL() ? env_vars::kRtlLocale : env_vars::kLtrLocale));
 376
 377   env->SetVar(env_vars::kRestartInfo, base::UTF16ToUTF8(dlg_strings));
 378 }
 379
 380 // static
 381 void ChromeBrowserMainPartsWin::RegisterApplicationRestart(
 382     const base::CommandLine& parsed_command_line) {
 383   DCHECK(base::win::GetVersion() >= base::win::VERSION_VISTA);
 384   base::ScopedNativeLibrary library(base::FilePath(L"kernel32.dll"));
 385   // Get the function pointer for RegisterApplicationRestart.
 386   RegisterApplicationRestartProc register_application_restart =
 387       reinterpret_cast<RegisterApplicationRestartProc>(
 388           library.GetFunctionPointer("RegisterApplicationRestart"));
 389   if (!register_application_restart) {
 390     LOG(WARNING) << "Cannot find RegisterApplicationRestart in kernel32.dll";
 391     return;
 392   }
 393   // The Windows Restart Manager expects a string of command line flags only,
 394   // without the program.
 395   base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
 396   command_line.AppendArguments(parsed_command_line, false);
 397   if (!command_line.HasSwitch(switches::kRestoreLastSession))
 398     command_line.AppendSwitch(switches::kRestoreLastSession);
 399
 400   // Restart Chrome if the computer is restarted as the result of an update.
 401   // This could be extended to handle crashes, hangs, and patches.
 402   HRESULT hr = register_application_restart(
 403       command_line.GetCommandLineString().c_str(),
 404       RESTART_NO_CRASH | RESTART_NO_HANG | RESTART_NO_PATCH);
 405   if (FAILED(hr)) {
 406     if (hr == E_INVALIDARG) {
 407       LOG(WARNING) << "Command line too long for RegisterApplicationRestart";
 408     } else {
 409       NOTREACHED() << "RegisterApplicationRestart failed. hr: " << hr <<
 410                       ", command_line: " << command_line.GetCommandLineString();
 411     }
 412   }
 413 }
 414
 415 // static
 416 int ChromeBrowserMainPartsWin::HandleIconsCommands(
 417     const base::CommandLine& parsed_command_line) {
 418   if (parsed_command_line.HasSwitch(switches::kHideIcons)) {
 419     base::string16 cp_applet;
 420     base::win::Version version = base::win::GetVersion();
 421     if (version >= base::win::VERSION_VISTA) {
 422       cp_applet.assign(L"Programs and Features");  // Windows Vista and later.
 423     } else if (version >= base::win::VERSION_XP) {
 424       cp_applet.assign(L"Add/Remove Programs");  // Windows XP.
 425     } else {
 426       return chrome::RESULT_CODE_UNSUPPORTED_PARAM;  // Not supported
 427     }
 428
 429     const base::string16 msg =
 430         l10n_util::GetStringFUTF16(IDS_HIDE_ICONS_NOT_SUPPORTED, cp_applet);
 431     const base::string16 caption = l10n_util::GetStringUTF16(IDS_PRODUCT_NAME);
 432     const UINT flags = MB_OKCANCEL | MB_ICONWARNING | MB_TOPMOST;
 433     if (IDOK == ui::MessageBox(NULL, msg, caption, flags))
 434       ShellExecute(NULL, NULL, L"appwiz.cpl", NULL, NULL, SW_SHOWNORMAL);
 435
 436     // Exit as we are not launching the browser.
 437     return content::RESULT_CODE_NORMAL_EXIT;
 438   }
 439   // We don't hide icons so we shouldn't do anything special to show them
 440   return chrome::RESULT_CODE_UNSUPPORTED_PARAM;
 441 }
 442
 443 // static
 444 bool ChromeBrowserMainPartsWin::CheckMachineLevelInstall() {
 445   // TODO(tommi): Check if using the default distribution is always the right
 446   // thing to do.
 447   BrowserDistribution* dist = BrowserDistribution::GetDistribution();
 448   Version version;
 449   InstallUtil::GetChromeVersion(dist, true, &version);
 450   if (version.IsValid()) {
 451     base::FilePath exe_path;
 452     PathService::Get(base::DIR_EXE, &exe_path);
 453     std::wstring exe = exe_path.value();
 454     base::FilePath user_exe_path(installer::GetChromeInstallPath(false, dist));
 455     if (base::FilePath::CompareEqualIgnoreCase(exe, user_exe_path.value())) {
 456       bool is_metro = base::win::IsMetroProcess();
 457       if (!is_metro) {
 458         // The dialog cannot be shown in Win8 Metro as doing so hangs Chrome on
 459         // an invisible dialog.
 460         // TODO (gab): Get rid of this dialog altogether and auto-launch
 461         // system-level Chrome instead.
 462         const base::string16 text =
 463             l10n_util::GetStringUTF16(IDS_MACHINE_LEVEL_INSTALL_CONFLICT);
 464         const base::string16 caption =
 465             l10n_util::GetStringUTF16(IDS_PRODUCT_NAME);
 466         const UINT flags = MB_OK | MB_ICONERROR | MB_TOPMOST;
 467         ui::MessageBox(NULL, text, caption, flags);
 468       }
 469       base::CommandLine uninstall_cmd(
 470           InstallUtil::GetChromeUninstallCmd(false, dist->GetType()));
 471       if (!uninstall_cmd.GetProgram().empty()) {
 472         uninstall_cmd.AppendSwitch(installer::switches::kSelfDestruct);
 473         uninstall_cmd.AppendSwitch(installer::switches::kForceUninstall);
 474         uninstall_cmd.AppendSwitch(
 475             installer::switches::kDoNotRemoveSharedItems);
 476
 477         // Trigger Active Setup for the system-level Chrome to make sure
 478         // per-user shortcuts to the system-level Chrome are created. Skip this
 479         // if the system-level Chrome will undergo first run anyway, as Active
 480         // Setup is triggered on system-level Chrome's first run.
 481         // TODO(gab): Instead of having callers of Active Setup think about
 482         // other callers, have Active Setup itself register when it ran and
 483         // no-op otherwise (http://crbug.com/346843).
 484         if (!first_run::IsChromeFirstRun())
 485           uninstall_cmd.AppendSwitch(installer::switches::kTriggerActiveSetup);
 486
 487         const base::FilePath setup_exe(uninstall_cmd.GetProgram());
 488         const base::string16 params(uninstall_cmd.GetArgumentsString());
 489
 490         SHELLEXECUTEINFO sei = { sizeof(sei) };
 491         sei.fMask = SEE_MASK_NOASYNC;
 492         sei.nShow = SW_SHOWNORMAL;
 493         sei.lpFile = setup_exe.value().c_str();
 494         sei.lpParameters = params.c_str();
 495         // On Windows 8 SEE_MASK_FLAG_LOG_USAGE is necessary to guarantee we
 496         // flip to the Desktop when launching.
 497         if (is_metro)
 498           sei.fMask |= SEE_MASK_FLAG_LOG_USAGE;
 499
 500         if (!::ShellExecuteEx(&sei))
 501           DPCHECK(false);
 502       }
 503       return true;
 504     }
 505   }
 506   return false;
 507 }
 508
 509 base::string16 TranslationDelegate::GetLocalizedString(
 510     int installer_string_id) {
 511   int resource_id = 0;
 512   switch (installer_string_id) {
 513   // HANDLE_STRING is used by the DO_INSTALLER_STRING_MAPPING macro which is in
 514   // the generated header installer_util_strings.h.
 515 #define HANDLE_STRING(base_id, chrome_id) \
 516   case base_id: \
 517     resource_id = chrome_id; \
 518     break;
 519   DO_INSTALLER_STRING_MAPPING
 520 #undef HANDLE_STRING
 521   default:
 522     NOTREACHED();
 523   }
 524   if (resource_id)
 525     return l10n_util::GetStringUTF16(resource_id);
 526   return base::string16();
 527 }
 528
 529 // static
 530 void ChromeBrowserMainPartsWin::SetupInstallerUtilStrings() {
 531   CR_DEFINE_STATIC_LOCAL(TranslationDelegate, delegate, ());
 532   installer::SetTranslationDelegate(&delegate);
 533 }