src/chrome/browser/web_applications/web_app_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/web_applications/web_app_win.h"
   6
   7 #include <shlobj.h>
   8
   9 #include "base/command_line.h"
  10 #include "base/file_util.h"
  11 #include "base/files/file_enumerator.h"
  12 #include "base/logging.h"
  13 #include "base/md5.h"
  14 #include "base/path_service.h"
  15 #include "base/strings/string_piece.h"
  16 #include "base/strings/stringprintf.h"
  17 #include "base/strings/utf_string_conversions.h"
  18 #include "base/win/shortcut.h"
  19 #include "base/win/windows_version.h"
  20 #include "chrome/browser/web_applications/update_shortcut_worker_win.h"
  21 #include "chrome/common/chrome_switches.h"
  22 #include "chrome/installer/util/browser_distribution.h"
  23 #include "chrome/installer/util/shell_util.h"
  24 #include "chrome/installer/util/util_constants.h"
  25 #include "content/public/browser/browser_thread.h"
  26 #include "ui/gfx/icon_util.h"
  27 #include "ui/gfx/image/image.h"
  28 #include "ui/gfx/image/image_family.h"
  29
  30 namespace {
  31
  32 const base::FilePath::CharType kIconChecksumFileExt[] =
  33     FILE_PATH_LITERAL(".ico.md5");
  34
  35 // Calculates checksum of an icon family using MD5.
  36 // The checksum is derived from all of the icons in the family.
  37 void GetImageCheckSum(const gfx::ImageFamily& image, base::MD5Digest* digest) {
  38   DCHECK(digest);
  39   base::MD5Context md5_context;
  40   base::MD5Init(&md5_context);
  41
  42   for (gfx::ImageFamily::const_iterator it = image.begin(); it != image.end();
  43        ++it) {
  44     SkBitmap bitmap = it->AsBitmap();
  45
  46     SkAutoLockPixels image_lock(bitmap);
  47     base::StringPiece image_data(
  48         reinterpret_cast<const char*>(bitmap.getPixels()), bitmap.getSize());
  49     base::MD5Update(&md5_context, image_data);
  50   }
  51
  52   base::MD5Final(digest, &md5_context);
  53 }
  54
  55 // Saves |image| as an |icon_file| with the checksum.
  56 bool SaveIconWithCheckSum(const base::FilePath& icon_file,
  57                           const gfx::ImageFamily& image) {
  58   if (!IconUtil::CreateIconFileFromImageFamily(image, icon_file))
  59     return false;
  60
  61   base::MD5Digest digest;
  62   GetImageCheckSum(image, &digest);
  63
  64   base::FilePath cheksum_file(icon_file.ReplaceExtension(kIconChecksumFileExt));
  65   return base::WriteFile(cheksum_file,
  66                          reinterpret_cast<const char*>(&digest),
  67                          sizeof(digest)) == sizeof(digest);
  68 }
  69
  70 // Returns true if |icon_file| is missing or different from |image|.
  71 bool ShouldUpdateIcon(const base::FilePath& icon_file,
  72                       const gfx::ImageFamily& image) {
  73   base::FilePath checksum_file(
  74       icon_file.ReplaceExtension(kIconChecksumFileExt));
  75
  76   // Returns true if icon_file or checksum file is missing.
  77   if (!base::PathExists(icon_file) ||
  78       !base::PathExists(checksum_file))
  79     return true;
  80
  81   base::MD5Digest persisted_image_checksum;
  82   if (sizeof(persisted_image_checksum) != base::ReadFile(checksum_file,
  83                       reinterpret_cast<char*>(&persisted_image_checksum),
  84                       sizeof(persisted_image_checksum)))
  85     return true;
  86
  87   base::MD5Digest downloaded_image_checksum;
  88   GetImageCheckSum(image, &downloaded_image_checksum);
  89
  90   // Update icon if checksums are not equal.
  91   return memcmp(&persisted_image_checksum, &downloaded_image_checksum,
  92                 sizeof(base::MD5Digest)) != 0;
  93 }
  94
  95 // Returns true if |shortcut_file_name| matches profile |profile_path|, and has
  96 // an --app-id flag.
  97 bool IsAppShortcutForProfile(const base::FilePath& shortcut_file_name,
  98                              const base::FilePath& profile_path) {
  99   base::string16 cmd_line_string;
 100   if (base::win::ResolveShortcut(shortcut_file_name, NULL, &cmd_line_string)) {
 101     cmd_line_string = L"program " + cmd_line_string;
 102     CommandLine shortcut_cmd_line = CommandLine::FromString(cmd_line_string);
 103     return shortcut_cmd_line.HasSwitch(switches::kProfileDirectory) &&
 104            shortcut_cmd_line.GetSwitchValuePath(switches::kProfileDirectory) ==
 105                profile_path.BaseName() &&
 106            shortcut_cmd_line.HasSwitch(switches::kAppId);
 107   }
 108
 109   return false;
 110 }
 111
 112 // Finds shortcuts in |shortcut_path| that match profile for |profile_path| and
 113 // extension with title |shortcut_name|.
 114 // If |shortcut_name| is empty, finds all shortcuts matching |profile_path|.
 115 std::vector<base::FilePath> FindAppShortcutsByProfileAndTitle(
 116     const base::FilePath& shortcut_path,
 117     const base::FilePath& profile_path,
 118     const base::string16& shortcut_name) {
 119   std::vector<base::FilePath> shortcut_paths;
 120
 121   if (shortcut_name.empty()) {
 122     // Find all shortcuts for this profile.
 123     base::FileEnumerator files(shortcut_path, false,
 124                                base::FileEnumerator::FILES,
 125                                FILE_PATH_LITERAL("*.lnk"));
 126     base::FilePath shortcut_file = files.Next();
 127     while (!shortcut_file.empty()) {
 128       if (IsAppShortcutForProfile(shortcut_file, profile_path))
 129         shortcut_paths.push_back(shortcut_file);
 130       shortcut_file = files.Next();
 131     }
 132   } else {
 133     // Find all shortcuts matching |shortcut_name|.
 134     base::FilePath base_path = shortcut_path.
 135         Append(web_app::internals::GetSanitizedFileName(shortcut_name)).
 136         AddExtension(FILE_PATH_LITERAL(".lnk"));
 137
 138     const int fileNamesToCheck = 10;
 139     for (int i = 0; i < fileNamesToCheck; ++i) {
 140       base::FilePath shortcut_file = base_path;
 141       if (i > 0) {
 142         shortcut_file = shortcut_file.InsertBeforeExtensionASCII(
 143             base::StringPrintf(" (%d)", i));
 144       }
 145       if (base::PathExists(shortcut_file) &&
 146           IsAppShortcutForProfile(shortcut_file, profile_path)) {
 147         shortcut_paths.push_back(shortcut_file);
 148       }
 149     }
 150   }
 151
 152   return shortcut_paths;
 153 }
 154
 155 // Creates application shortcuts in a given set of paths.
 156 // |shortcut_paths| is a list of directories in which shortcuts should be
 157 // created. If |creation_reason| is SHORTCUT_CREATION_AUTOMATED and there is an
 158 // existing shortcut to this app for this profile, does nothing (succeeding).
 159 // Returns true on success, false on failure.
 160 // Must be called on the FILE thread.
 161 bool CreateShortcutsInPaths(
 162     const base::FilePath& web_app_path,
 163     const web_app::ShortcutInfo& shortcut_info,
 164     const std::vector<base::FilePath>& shortcut_paths,
 165     web_app::ShortcutCreationReason creation_reason,
 166     std::vector<base::FilePath>* out_filenames) {
 167   // Ensure web_app_path exists.
 168   if (!base::PathExists(web_app_path) &&
 169       !base::CreateDirectory(web_app_path)) {
 170     return false;
 171   }
 172
 173   // Generates file name to use with persisted ico and shortcut file.
 174   base::FilePath icon_file =
 175       web_app::internals::GetIconFilePath(web_app_path, shortcut_info.title);
 176   if (!web_app::internals::CheckAndSaveIcon(icon_file, shortcut_info.favicon)) {
 177     return false;
 178   }
 179
 180   base::FilePath chrome_exe;
 181   if (!PathService::Get(base::FILE_EXE, &chrome_exe)) {
 182     NOTREACHED();
 183     return false;
 184   }
 185
 186   // Working directory.
 187   base::FilePath working_dir(chrome_exe.DirName());
 188
 189   CommandLine cmd_line(CommandLine::NO_PROGRAM);
 190   cmd_line = ShellIntegration::CommandLineArgsForLauncher(shortcut_info.url,
 191       shortcut_info.extension_id, shortcut_info.profile_path);
 192
 193   // TODO(evan): we rely on the fact that command_line_string() is
 194   // properly quoted for a Windows command line.  The method on
 195   // CommandLine should probably be renamed to better reflect that
 196   // fact.
 197   base::string16 wide_switches(cmd_line.GetCommandLineString());
 198
 199   // Sanitize description
 200   base::string16 description = shortcut_info.description;
 201   if (description.length() >= MAX_PATH)
 202     description.resize(MAX_PATH - 1);
 203
 204   // Generates app id from web app url and profile path.
 205   std::string app_name(web_app::GenerateApplicationNameFromInfo(shortcut_info));
 206   base::string16 app_id(ShellIntegration::GetAppModelIdForProfile(
 207       base::UTF8ToUTF16(app_name), shortcut_info.profile_path));
 208
 209   bool success = true;
 210   for (size_t i = 0; i < shortcut_paths.size(); ++i) {
 211     base::FilePath shortcut_file =
 212         shortcut_paths[i]
 213             .Append(
 214                  web_app::internals::GetSanitizedFileName(shortcut_info.title))
 215             .AddExtension(installer::kLnkExt);
 216     if (creation_reason == web_app::SHORTCUT_CREATION_AUTOMATED) {
 217       // Check whether there is an existing shortcut to this app.
 218       std::vector<base::FilePath> shortcut_files =
 219           FindAppShortcutsByProfileAndTitle(shortcut_paths[i],
 220                                             shortcut_info.profile_path,
 221                                             shortcut_info.title);
 222       if (!shortcut_files.empty())
 223         continue;
 224     }
 225     if (shortcut_paths[i] != web_app_path) {
 226       int unique_number =
 227           base::GetUniquePathNumber(shortcut_file,
 228                                     base::FilePath::StringType());
 229       if (unique_number == -1) {
 230         success = false;
 231         continue;
 232       } else if (unique_number > 0) {
 233         shortcut_file = shortcut_file.InsertBeforeExtensionASCII(
 234             base::StringPrintf(" (%d)", unique_number));
 235       }
 236     }
 237     base::win::ShortcutProperties shortcut_properties;
 238     shortcut_properties.set_target(chrome_exe);
 239     shortcut_properties.set_working_dir(working_dir);
 240     shortcut_properties.set_arguments(wide_switches);
 241     shortcut_properties.set_description(description);
 242     shortcut_properties.set_icon(icon_file, 0);
 243     shortcut_properties.set_app_id(app_id);
 244     shortcut_properties.set_dual_mode(false);
 245     if (!base::PathExists(shortcut_file.DirName()) &&
 246         !base::CreateDirectory(shortcut_file.DirName())) {
 247       NOTREACHED();
 248       return false;
 249     }
 250     success = base::win::CreateOrUpdateShortcutLink(
 251         shortcut_file, shortcut_properties,
 252         base::win::SHORTCUT_CREATE_ALWAYS) && success;
 253     if (out_filenames)
 254       out_filenames->push_back(shortcut_file);
 255   }
 256
 257   return success;
 258 }
 259
 260 // Gets the directories with shortcuts for an app, and deletes the shortcuts.
 261 // This will search the standard locations for shortcuts named |title| that open
 262 // in the profile with |profile_path|.
 263 // |was_pinned_to_taskbar| will be set to true if there was previously a
 264 // shortcut pinned to the taskbar for this app; false otherwise.
 265 // If |web_app_path| is empty, this will not delete shortcuts from the web app
 266 // directory. If |title| is empty, all shortcuts for this profile will be
 267 // deleted.
 268 // |shortcut_paths| will be populated with a list of directories where shortcuts
 269 // for this app were found (and deleted). This will delete duplicate shortcuts,
 270 // but only return each path once, even if it contained multiple deleted
 271 // shortcuts. Both of these may be NULL.
 272 void GetShortcutLocationsAndDeleteShortcuts(
 273     const base::FilePath& web_app_path,
 274     const base::FilePath& profile_path,
 275     const base::string16& title,
 276     bool* was_pinned_to_taskbar,
 277     std::vector<base::FilePath>* shortcut_paths) {
 278   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::FILE));
 279
 280   // Get all possible locations for shortcuts.
 281   web_app::ShortcutLocations all_shortcut_locations;
 282   all_shortcut_locations.in_quick_launch_bar = true;
 283   all_shortcut_locations.on_desktop = true;
 284   // Delete shortcuts from the Chrome Apps subdirectory.
 285   // This matches the subdir name set by CreateApplicationShortcutView::Accept
 286   // for Chrome apps (not URL apps, but this function does not apply for them).
 287   all_shortcut_locations.applications_menu_location =
 288       web_app::APP_MENU_LOCATION_SUBDIR_CHROMEAPPS;
 289   std::vector<base::FilePath> all_paths = web_app::internals::GetShortcutPaths(
 290       all_shortcut_locations);
 291   if (base::win::GetVersion() >= base::win::VERSION_WIN7 &&
 292       !web_app_path.empty()) {
 293     all_paths.push_back(web_app_path);
 294   }
 295
 296   if (was_pinned_to_taskbar) {
 297     // Determine if there is a link to this app in the TaskBar pin directory.
 298     base::FilePath taskbar_pin_path;
 299     if (PathService::Get(base::DIR_TASKBAR_PINS, &taskbar_pin_path)) {
 300       std::vector<base::FilePath> taskbar_pin_files =
 301           FindAppShortcutsByProfileAndTitle(taskbar_pin_path, profile_path,
 302                                             title);
 303       *was_pinned_to_taskbar = !taskbar_pin_files.empty();
 304     } else {
 305       *was_pinned_to_taskbar = false;
 306     }
 307   }
 308
 309   for (std::vector<base::FilePath>::const_iterator i = all_paths.begin();
 310        i != all_paths.end(); ++i) {
 311     std::vector<base::FilePath> shortcut_files =
 312         FindAppShortcutsByProfileAndTitle(*i, profile_path, title);
 313     if (shortcut_paths && !shortcut_files.empty()) {
 314       shortcut_paths->push_back(*i);
 315     }
 316     for (std::vector<base::FilePath>::const_iterator j = shortcut_files.begin();
 317          j != shortcut_files.end(); ++j) {
 318       // Any shortcut could have been pinned, either by chrome or the user, so
 319       // they are all unpinned.
 320       base::win::TaskbarUnpinShortcutLink(j->value().c_str());
 321       base::DeleteFile(*j, false);
 322     }
 323   }
 324 }
 325
 326 }  // namespace
 327
 328 namespace web_app {
 329
 330 base::FilePath CreateShortcutInWebAppDir(
 331     const base::FilePath& web_app_dir,
 332     const web_app::ShortcutInfo& shortcut_info) {
 333   std::vector<base::FilePath> paths;
 334   paths.push_back(web_app_dir);
 335   std::vector<base::FilePath> out_filenames;
 336   base::FilePath web_app_dir_shortcut =
 337       web_app_dir.Append(internals::GetSanitizedFileName(shortcut_info.title))
 338           .AddExtension(installer::kLnkExt);
 339   if (!PathExists(web_app_dir_shortcut)) {
 340     CreateShortcutsInPaths(web_app_dir,
 341                            shortcut_info,
 342                            paths,
 343                            SHORTCUT_CREATION_BY_USER,
 344                            &out_filenames);
 345     DCHECK_EQ(out_filenames.size(), 1u);
 346     DCHECK_EQ(out_filenames[0].value(), web_app_dir_shortcut.value());
 347   } else {
 348     internals::CheckAndSaveIcon(
 349         internals::GetIconFilePath(web_app_dir, shortcut_info.title),
 350         shortcut_info.favicon);
 351   }
 352   return web_app_dir_shortcut;
 353 }
 354
 355 namespace internals {
 356
 357 // Saves |image| to |icon_file| if the file is outdated and refresh shell's
 358 // icon cache to ensure correct icon is displayed. Returns true if icon_file
 359 // is up to date or successfully updated.
 360 bool CheckAndSaveIcon(const base::FilePath& icon_file,
 361                       const gfx::ImageFamily& image) {
 362   if (ShouldUpdateIcon(icon_file, image)) {
 363     if (SaveIconWithCheckSum(icon_file, image)) {
 364       // Refresh shell's icon cache. This call is quite disruptive as user would
 365       // see explorer rebuilding the icon cache. It would be great that we find
 366       // a better way to achieve this.
 367       SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST | SHCNF_FLUSHNOWAIT,
 368                      NULL, NULL);
 369     } else {
 370       return false;
 371     }
 372   }
 373
 374   return true;
 375 }
 376
 377 bool CreatePlatformShortcuts(
 378     const base::FilePath& web_app_path,
 379     const web_app::ShortcutInfo& shortcut_info,
 380     const extensions::FileHandlersInfo& file_handlers_info,
 381     const web_app::ShortcutLocations& creation_locations,
 382     ShortcutCreationReason creation_reason) {
 383   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::FILE));
 384
 385   // Shortcut paths under which to create shortcuts.
 386   std::vector<base::FilePath> shortcut_paths =
 387       GetShortcutPaths(creation_locations);
 388
 389   bool pin_to_taskbar = creation_locations.in_quick_launch_bar &&
 390                         (base::win::GetVersion() >= base::win::VERSION_WIN7);
 391
 392   // Create/update the shortcut in the web app path for the "Pin To Taskbar"
 393   // option in Win7. We use the web app path shortcut because we will overwrite
 394   // it rather than appending unique numbers if the shortcut already exists.
 395   // This prevents pinned apps from having unique numbers in their names.
 396   if (pin_to_taskbar)
 397     shortcut_paths.push_back(web_app_path);
 398
 399   if (shortcut_paths.empty())
 400     return false;
 401
 402   if (!CreateShortcutsInPaths(web_app_path, shortcut_info, shortcut_paths,
 403                               creation_reason, NULL))
 404     return false;
 405
 406   if (pin_to_taskbar) {
 407     base::FilePath file_name = GetSanitizedFileName(shortcut_info.title);
 408     // Use the web app path shortcut for pinning to avoid having unique numbers
 409     // in the application name.
 410     base::FilePath shortcut_to_pin = web_app_path.Append(file_name).
 411         AddExtension(installer::kLnkExt);
 412     if (!base::win::TaskbarPinShortcutLink(shortcut_to_pin.value().c_str()))
 413       return false;
 414   }
 415
 416   return true;
 417 }
 418
 419 void UpdatePlatformShortcuts(
 420     const base::FilePath& web_app_path,
 421     const base::string16& old_app_title,
 422     const web_app::ShortcutInfo& shortcut_info,
 423     const extensions::FileHandlersInfo& file_handlers_info) {
 424   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::FILE));
 425
 426   // Generates file name to use with persisted ico and shortcut file.
 427   base::FilePath file_name =
 428       web_app::internals::GetSanitizedFileName(shortcut_info.title);
 429
 430   if (old_app_title != shortcut_info.title) {
 431     // The app's title has changed. Delete all existing app shortcuts and
 432     // recreate them in any locations they already existed (but do not add them
 433     // to locations where they do not currently exist).
 434     bool was_pinned_to_taskbar;
 435     std::vector<base::FilePath> shortcut_paths;
 436     GetShortcutLocationsAndDeleteShortcuts(
 437         web_app_path, shortcut_info.profile_path, old_app_title,
 438         &was_pinned_to_taskbar, &shortcut_paths);
 439     CreateShortcutsInPaths(web_app_path, shortcut_info, shortcut_paths,
 440                            SHORTCUT_CREATION_BY_USER, NULL);
 441     // If the shortcut was pinned to the taskbar,
 442     // GetShortcutLocationsAndDeleteShortcuts will have deleted it. In that
 443     // case, re-pin it.
 444     if (was_pinned_to_taskbar) {
 445       base::FilePath file_name = GetSanitizedFileName(shortcut_info.title);
 446       // Use the web app path shortcut for pinning to avoid having unique
 447       // numbers in the application name.
 448       base::FilePath shortcut_to_pin = web_app_path.Append(file_name).
 449           AddExtension(installer::kLnkExt);
 450       base::win::TaskbarPinShortcutLink(shortcut_to_pin.value().c_str());
 451     }
 452   }
 453
 454   // Update the icon if necessary.
 455   base::FilePath icon_file = GetIconFilePath(web_app_path, shortcut_info.title);
 456   CheckAndSaveIcon(icon_file, shortcut_info.favicon);
 457 }
 458
 459 void DeletePlatformShortcuts(
 460     const base::FilePath& web_app_path,
 461     const web_app::ShortcutInfo& shortcut_info) {
 462   GetShortcutLocationsAndDeleteShortcuts(
 463       web_app_path, shortcut_info.profile_path, shortcut_info.title, NULL,
 464       NULL);
 465
 466   // If there are no more shortcuts in the Chrome Apps subdirectory, remove it.
 467   base::FilePath chrome_apps_dir;
 468   if (ShellUtil::GetShortcutPath(
 469           ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_APPS_DIR,
 470           BrowserDistribution::GetDistribution(),
 471           ShellUtil::CURRENT_USER,
 472           &chrome_apps_dir)) {
 473     if (base::IsDirectoryEmpty(chrome_apps_dir))
 474       base::DeleteFile(chrome_apps_dir, false);
 475   }
 476 }
 477
 478 void DeleteAllShortcutsForProfile(const base::FilePath& profile_path) {
 479   GetShortcutLocationsAndDeleteShortcuts(base::FilePath(), profile_path, L"",
 480                                          NULL, NULL);
 481
 482   // If there are no more shortcuts in the Chrome Apps subdirectory, remove it.
 483   base::FilePath chrome_apps_dir;
 484   if (ShellUtil::GetShortcutPath(
 485           ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_APPS_DIR,
 486           BrowserDistribution::GetDistribution(),
 487           ShellUtil::CURRENT_USER,
 488           &chrome_apps_dir)) {
 489     if (base::IsDirectoryEmpty(chrome_apps_dir))
 490       base::DeleteFile(chrome_apps_dir, false);
 491   }
 492 }
 493
 494 std::vector<base::FilePath> GetShortcutPaths(
 495     const web_app::ShortcutLocations& creation_locations) {
 496   // Shortcut paths under which to create shortcuts.
 497   std::vector<base::FilePath> shortcut_paths;
 498   // Locations to add to shortcut_paths.
 499   struct {
 500     bool use_this_location;
 501     ShellUtil::ShortcutLocation location_id;
 502   } locations[] = {
 503     {
 504       creation_locations.on_desktop,
 505       ShellUtil::SHORTCUT_LOCATION_DESKTOP
 506     }, {
 507       creation_locations.applications_menu_location ==
 508           web_app::APP_MENU_LOCATION_ROOT,
 509       ShellUtil::SHORTCUT_LOCATION_START_MENU_ROOT
 510     }, {
 511       creation_locations.applications_menu_location ==
 512           web_app::APP_MENU_LOCATION_SUBDIR_CHROME,
 513       ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_DIR
 514     }, {
 515       creation_locations.applications_menu_location ==
 516           web_app::APP_MENU_LOCATION_SUBDIR_CHROMEAPPS,
 517       ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_APPS_DIR
 518     }, {
 519       // For Win7+, |in_quick_launch_bar| indicates that we are pinning to
 520       // taskbar. This needs to be handled by callers.
 521       creation_locations.in_quick_launch_bar &&
 522           base::win::GetVersion() < base::win::VERSION_WIN7,
 523       ShellUtil::SHORTCUT_LOCATION_QUICK_LAUNCH
 524     }
 525   };
 526
 527   BrowserDistribution* dist = BrowserDistribution::GetDistribution();
 528   // Populate shortcut_paths.
 529   for (int i = 0; i < arraysize(locations); ++i) {
 530     if (locations[i].use_this_location) {
 531       base::FilePath path;
 532       if (!ShellUtil::GetShortcutPath(locations[i].location_id,
 533                                       dist,
 534                                       ShellUtil::CURRENT_USER,
 535                                       &path)) {
 536         NOTREACHED();
 537         continue;
 538       }
 539       shortcut_paths.push_back(path);
 540     }
 541   }
 542   return shortcut_paths;
 543 }
 544
 545 base::FilePath GetIconFilePath(const base::FilePath& web_app_path,
 546                                const base::string16& title) {
 547   return web_app_path.Append(GetSanitizedFileName(title))
 548       .AddExtension(FILE_PATH_LITERAL(".ico"));
 549 }
 550
 551 }  // namespace internals
 552
 553 void UpdateShortcutForTabContents(content::WebContents* web_contents) {
 554   // UpdateShortcutWorker will delete itself when it's done.
 555   UpdateShortcutWorker* worker = new UpdateShortcutWorker(web_contents);
 556   worker->Run();
 557 }
 558
 559 }  // namespace web_app