src/chrome/common/chrome_paths.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/common/chrome_paths.h"
   6
   7 #include "base/file_util.h"
   8 #include "base/logging.h"
   9 #include "base/mac/bundle_locations.h"
  10 #include "base/path_service.h"
  11 #include "base/strings/string_util.h"
  12 #include "base/sys_info.h"
  13 #include "base/threading/thread_restrictions.h"
  14 #include "base/version.h"
  15 #include "chrome/common/chrome_constants.h"
  16 #include "chrome/common/chrome_paths_internal.h"
  17 #include "chrome/common/widevine_cdm_constants.h"
  18 #include "ui/base/ui_base_paths.h"
  19
  20 #if defined(OS_ANDROID)
  21 #include "base/android/path_utils.h"
  22 #endif
  23
  24 #if defined(OS_MACOSX)
  25 #include "base/mac/foundation_util.h"
  26 #endif
  27
  28 #include "widevine_cdm_version.h"  // In SHARED_INTERMEDIATE_DIR.
  29
  30 namespace {
  31
  32 // File name of the internal Flash plugin on different platforms.
  33 const base::FilePath::CharType kInternalFlashPluginFileName[] =
  34 #if defined(OS_MACOSX)
  35     FILE_PATH_LITERAL("Flash Player Plugin for Chrome.plugin");
  36 #elif defined(OS_WIN)
  37     FILE_PATH_LITERAL("gcswf32.dll");
  38 #else  // OS_LINUX, etc.
  39     FILE_PATH_LITERAL("libgcflashplayer.so");
  40 #endif
  41
  42 // The Pepper Flash plugins are in a directory with this name.
  43 const base::FilePath::CharType kPepperFlashBaseDirectory[] =
  44     FILE_PATH_LITERAL("PepperFlash");
  45
  46 // File name of the internal PDF plugin on different platforms.
  47 const base::FilePath::CharType kInternalPDFPluginFileName[] =
  48 #if defined(OS_WIN)
  49     FILE_PATH_LITERAL("pdf.dll");
  50 #elif defined(OS_MACOSX)
  51     FILE_PATH_LITERAL("PDF.plugin");
  52 #else  // Linux and Chrome OS
  53     FILE_PATH_LITERAL("libpdf.so");
  54 #endif
  55
  56 // File name of the internal NaCl plugin on different platforms.
  57 const base::FilePath::CharType kInternalNaClPluginFileName[] =
  58 #if defined(OS_WIN)
  59     FILE_PATH_LITERAL("ppGoogleNaClPluginChrome.dll");
  60 #elif defined(OS_MACOSX)
  61     // TODO(noelallen) Please verify this extention name is correct.
  62     FILE_PATH_LITERAL("ppGoogleNaClPluginChrome.plugin");
  63 #else  // Linux and Chrome OS
  64     FILE_PATH_LITERAL("libppGoogleNaClPluginChrome.so");
  65 #endif
  66
  67 const base::FilePath::CharType kEffectsPluginFileName[] =
  68 #if defined(OS_WIN)
  69     FILE_PATH_LITERAL("pepper/libppeffects.dll");
  70 #elif defined(OS_MACOSX)
  71     FILE_PATH_LITERAL("pepper/libppeffects.plugin");
  72 #else  // Linux and Chrome OS
  73     FILE_PATH_LITERAL("pepper/libppeffects.so");
  74 #endif
  75
  76 #if defined(OS_POSIX) && !defined(OS_MACOSX)
  77
  78 const base::FilePath::CharType kO1DPluginFileName[] =
  79     FILE_PATH_LITERAL("pepper/libppo1d.so");
  80
  81 const base::FilePath::CharType kGTalkPluginFileName[] =
  82     FILE_PATH_LITERAL("pepper/libppgoogletalk.so");
  83
  84 #endif  // defined(OS_POSIX) && !defined(OS_MACOSX)
  85
  86 #if defined(OS_LINUX)
  87 // The path to the external extension <id>.json files.
  88 // /usr/share seems like a good choice, see: http://www.pathname.com/fhs/
  89 const base::FilePath::CharType kFilepathSinglePrefExtensions[] =
  90 #if defined(GOOGLE_CHROME_BUILD)
  91     FILE_PATH_LITERAL("/usr/share/google-chrome/extensions");
  92 #else
  93     FILE_PATH_LITERAL("/usr/share/chromium/extensions");
  94 #endif  // defined(GOOGLE_CHROME_BUILD)
  95 #endif  // defined(OS_LINUX)
  96
  97 }  // namespace
  98
  99 namespace chrome {
 100
 101 // Gets the path for internal plugins.
 102 bool GetInternalPluginsDirectory(base::FilePath* result) {
 103 #if defined(OS_MACOSX) && !defined(OS_IOS)
 104   // If called from Chrome, get internal plugins from a subdirectory of the
 105   // framework.
 106   if (base::mac::AmIBundled()) {
 107     *result = chrome::GetFrameworkBundlePath();
 108     DCHECK(!result->empty());
 109     *result = result->Append("Internet Plug-Ins");
 110     return true;
 111   }
 112   // In tests, just look in the module directory (below).
 113 #endif
 114
 115   // The rest of the world expects plugins in the module directory.
 116   return PathService::Get(base::DIR_MODULE, result);
 117 }
 118
 119 bool PathProvider(int key, base::FilePath* result) {
 120   // Some keys are just aliases...
 121   switch (key) {
 122     case chrome::DIR_APP:
 123       return PathService::Get(base::DIR_MODULE, result);
 124     case chrome::DIR_LOGS:
 125 #ifdef NDEBUG
 126       // Release builds write to the data dir
 127       return PathService::Get(chrome::DIR_USER_DATA, result);
 128 #else
 129       // Debug builds write next to the binary (in the build tree)
 130 #if defined(OS_MACOSX)
 131       if (!PathService::Get(base::DIR_EXE, result))
 132         return false;
 133       if (base::mac::AmIBundled()) {
 134         // If we're called from chrome, dump it beside the app (outside the
 135         // app bundle), if we're called from a unittest, we'll already
 136         // outside the bundle so use the exe dir.
 137         // exe_dir gave us .../Chromium.app/Contents/MacOS/Chromium.
 138         *result = result->DirName();
 139         *result = result->DirName();
 140         *result = result->DirName();
 141       }
 142       return true;
 143 #else
 144       return PathService::Get(base::DIR_EXE, result);
 145 #endif  // defined(OS_MACOSX)
 146 #endif  // NDEBUG
 147     case chrome::FILE_RESOURCE_MODULE:
 148       return PathService::Get(base::FILE_MODULE, result);
 149   }
 150
 151   // Assume that we will not need to create the directory if it does not exist.
 152   // This flag can be set to true for the cases where we want to create it.
 153   bool create_dir = false;
 154
 155   base::FilePath cur;
 156   switch (key) {
 157     case chrome::DIR_USER_DATA:
 158       if (!GetDefaultUserDataDirectory(&cur)) {
 159         NOTREACHED();
 160         return false;
 161       }
 162       create_dir = true;
 163       break;
 164     case chrome::DIR_USER_DOCUMENTS:
 165       if (!GetUserDocumentsDirectory(&cur))
 166         return false;
 167       create_dir = true;
 168       break;
 169     case chrome::DIR_USER_MUSIC:
 170       if (!GetUserMusicDirectory(&cur))
 171         return false;
 172       break;
 173     case chrome::DIR_USER_PICTURES:
 174       if (!GetUserPicturesDirectory(&cur))
 175         return false;
 176       break;
 177     case chrome::DIR_USER_VIDEOS:
 178       if (!GetUserVideosDirectory(&cur))
 179         return false;
 180       break;
 181     case chrome::DIR_DEFAULT_DOWNLOADS_SAFE:
 182 #if defined(OS_WIN) || defined(OS_LINUX)
 183       if (!GetUserDownloadsDirectorySafe(&cur))
 184         return false;
 185       break;
 186 #else
 187       // Fall through for all other platforms.
 188 #endif
 189     case chrome::DIR_DEFAULT_DOWNLOADS:
 190 #if defined(OS_ANDROID)
 191       if (!base::android::GetDownloadsDirectory(&cur))
 192         return false;
 193 #else
 194       if (!GetUserDownloadsDirectory(&cur))
 195         return false;
 196       // Do not create the download directory here, we have done it twice now
 197       // and annoyed a lot of users.
 198 #endif
 199       break;
 200     case chrome::DIR_CRASH_DUMPS:
 201 #if defined(OS_CHROMEOS)
 202       // ChromeOS uses a separate directory. See http://crosbug.com/25089
 203       cur = base::FilePath("/var/log/chrome");
 204 #elif defined(OS_ANDROID)
 205       if (!base::android::GetCacheDirectory(&cur))
 206         return false;
 207 #else
 208       // The crash reports are always stored relative to the default user data
 209       // directory.  This avoids the problem of having to re-initialize the
 210       // exception handler after parsing command line options, which may
 211       // override the location of the app's profile directory.
 212       if (!GetDefaultUserDataDirectory(&cur))
 213         return false;
 214 #endif
 215       cur = cur.Append(FILE_PATH_LITERAL("Crash Reports"));
 216       create_dir = true;
 217       break;
 218     case chrome::DIR_RESOURCES:
 219 #if defined(OS_MACOSX)
 220       cur = base::mac::FrameworkBundlePath();
 221       cur = cur.Append(FILE_PATH_LITERAL("Resources"));
 222 #else
 223       if (!PathService::Get(chrome::DIR_APP, &cur))
 224         return false;
 225       cur = cur.Append(FILE_PATH_LITERAL("resources"));
 226 #endif
 227       break;
 228     case chrome::DIR_INSPECTOR:
 229       if (!PathService::Get(chrome::DIR_RESOURCES, &cur))
 230         return false;
 231       cur = cur.Append(FILE_PATH_LITERAL("inspector"));
 232       break;
 233     case chrome::DIR_APP_DICTIONARIES:
 234 #if defined(OS_POSIX)
 235       // We can't write into the EXE dir on Linux, so keep dictionaries
 236       // alongside the safe browsing database in the user data dir.
 237       // And we don't want to write into the bundle on the Mac, so push
 238       // it to the user data dir there also.
 239       if (!PathService::Get(chrome::DIR_USER_DATA, &cur))
 240         return false;
 241 #else
 242       if (!PathService::Get(base::DIR_EXE, &cur))
 243         return false;
 244 #endif
 245       cur = cur.Append(FILE_PATH_LITERAL("Dictionaries"));
 246       create_dir = true;
 247       break;
 248     case chrome::DIR_INTERNAL_PLUGINS:
 249       if (!GetInternalPluginsDirectory(&cur))
 250         return false;
 251       break;
 252     case chrome::DIR_PEPPER_FLASH_PLUGIN:
 253       if (!GetInternalPluginsDirectory(&cur))
 254         return false;
 255       cur = cur.Append(kPepperFlashBaseDirectory);
 256       break;
 257     case chrome::DIR_COMPONENT_UPDATED_PEPPER_FLASH_PLUGIN:
 258       if (!PathService::Get(chrome::DIR_USER_DATA, &cur))
 259         return false;
 260       cur = cur.Append(kPepperFlashBaseDirectory);
 261       break;
 262     case chrome::FILE_LOCAL_STATE:
 263       if (!PathService::Get(chrome::DIR_USER_DATA, &cur))
 264         return false;
 265       cur = cur.Append(chrome::kLocalStateFilename);
 266       break;
 267     case chrome::FILE_RECORDED_SCRIPT:
 268       if (!PathService::Get(chrome::DIR_USER_DATA, &cur))
 269         return false;
 270       cur = cur.Append(FILE_PATH_LITERAL("script.log"));
 271       break;
 272     case chrome::FILE_FLASH_PLUGIN:
 273       if (!GetInternalPluginsDirectory(&cur))
 274         return false;
 275       cur = cur.Append(kInternalFlashPluginFileName);
 276       break;
 277     case chrome::FILE_PEPPER_FLASH_PLUGIN:
 278       if (!PathService::Get(chrome::DIR_PEPPER_FLASH_PLUGIN, &cur))
 279         return false;
 280       cur = cur.Append(chrome::kPepperFlashPluginFilename);
 281       break;
 282     case chrome::FILE_PDF_PLUGIN:
 283       if (!GetInternalPluginsDirectory(&cur))
 284         return false;
 285       cur = cur.Append(kInternalPDFPluginFileName);
 286       break;
 287     case chrome::FILE_EFFECTS_PLUGIN:
 288       if (!GetInternalPluginsDirectory(&cur))
 289         return false;
 290       cur = cur.Append(kEffectsPluginFileName);
 291       break;
 292     case chrome::FILE_NACL_PLUGIN:
 293       if (!GetInternalPluginsDirectory(&cur))
 294         return false;
 295       cur = cur.Append(kInternalNaClPluginFileName);
 296       break;
 297     // PNaCl is currenly installable via the component updater or by being
 298     // simply built-in.  DIR_PNACL_BASE is used as the base directory for
 299     // installation via component updater.  DIR_PNACL_COMPONENT will be
 300     // the final location of pnacl, which is a subdir of DIR_PNACL_BASE.
 301     case chrome::DIR_PNACL_BASE:
 302       if (!PathService::Get(chrome::DIR_USER_DATA, &cur))
 303         return false;
 304       cur = cur.Append(FILE_PATH_LITERAL("pnacl"));
 305       break;
 306     // Where PNaCl files are ultimately located.  The default finds the files
 307     // inside the InternalPluginsDirectory / build directory, as if it
 308     // was shipped along with chrome.  The value can be overridden
 309     // if it is installed via component updater.
 310     case chrome::DIR_PNACL_COMPONENT:
 311 #if defined(OS_MACOSX)
 312       // PNaCl really belongs in the InternalPluginsDirectory but actually
 313       // copying it there would result in the files also being shipped, which
 314       // we don't want yet. So for now, just find them in the directory where
 315       // they get built.
 316       if (!PathService::Get(base::DIR_EXE, &cur))
 317         return false;
 318       if (base::mac::AmIBundled()) {
 319         // If we're called from chrome, it's beside the app (outside the
 320         // app bundle), if we're called from a unittest, we'll already be
 321         // outside the bundle so use the exe dir.
 322         // exe_dir gave us .../Chromium.app/Contents/MacOS/Chromium.
 323         cur = cur.DirName();
 324         cur = cur.DirName();
 325         cur = cur.DirName();
 326       }
 327 #else
 328       if (!GetInternalPluginsDirectory(&cur))
 329         return false;
 330 #endif
 331       cur = cur.Append(FILE_PATH_LITERAL("pnacl"));
 332       break;
 333 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 334     case chrome::FILE_O1D_PLUGIN:
 335       if (!PathService::Get(base::DIR_MODULE, &cur))
 336         return false;
 337       cur = cur.Append(kO1DPluginFileName);
 338       break;
 339     case chrome::FILE_GTALK_PLUGIN:
 340       if (!PathService::Get(base::DIR_MODULE, &cur))
 341         return false;
 342       cur = cur.Append(kGTalkPluginFileName);
 343       break;
 344 #endif
 345 #if defined(WIDEVINE_CDM_AVAILABLE) && defined(ENABLE_PEPPER_CDMS)
 346 #if defined(WIDEVINE_CDM_IS_COMPONENT)
 347     case chrome::DIR_COMPONENT_WIDEVINE_CDM:
 348       if (!PathService::Get(chrome::DIR_USER_DATA, &cur))
 349         return false;
 350       cur = cur.Append(kWidevineCdmBaseDirectory);
 351       break;
 352 #endif  // defined(WIDEVINE_CDM_IS_COMPONENT)
 353     // TODO(xhwang): FILE_WIDEVINE_CDM_ADAPTER has different meanings.
 354     // In the component case, this is the source adapter. Otherwise, it is the
 355     // actual Pepper module that gets loaded.
 356     case chrome::FILE_WIDEVINE_CDM_ADAPTER:
 357       if (!GetInternalPluginsDirectory(&cur))
 358         return false;
 359       cur = cur.AppendASCII(kWidevineCdmAdapterFileName);
 360       break;
 361 #endif  // defined(WIDEVINE_CDM_AVAILABLE) && defined(ENABLE_PEPPER_CDMS)
 362     case chrome::FILE_RESOURCES_PACK:
 363 #if defined(OS_MACOSX) && !defined(OS_IOS)
 364       if (base::mac::AmIBundled()) {
 365         cur = base::mac::FrameworkBundlePath();
 366         cur = cur.Append(FILE_PATH_LITERAL("Resources"))
 367                  .Append(FILE_PATH_LITERAL("resources.pak"));
 368         break;
 369       }
 370 #elif defined(OS_ANDROID)
 371       if (!PathService::Get(ui::DIR_RESOURCE_PAKS_ANDROID, &cur))
 372         return false;
 373 #else
 374       // If we're not bundled on mac or Android, resources.pak should be next
 375       // to the binary (e.g., for unit tests).
 376       if (!PathService::Get(base::DIR_MODULE, &cur))
 377         return false;
 378 #endif
 379       cur = cur.Append(FILE_PATH_LITERAL("resources.pak"));
 380       break;
 381     case chrome::DIR_RESOURCES_EXTENSION:
 382       if (!PathService::Get(base::DIR_MODULE, &cur))
 383         return false;
 384       cur = cur.Append(FILE_PATH_LITERAL("resources"))
 385                .Append(FILE_PATH_LITERAL("extension"));
 386       break;
 387 #if defined(OS_CHROMEOS)
 388     case chrome::DIR_CHROMEOS_WALLPAPERS:
 389       if (!PathService::Get(chrome::DIR_USER_DATA, &cur))
 390         return false;
 391       cur = cur.Append(FILE_PATH_LITERAL("wallpapers"));
 392       break;
 393     case chrome::DIR_CHROMEOS_WALLPAPER_THUMBNAILS:
 394       if (!PathService::Get(chrome::DIR_USER_DATA, &cur))
 395         return false;
 396       cur = cur.Append(FILE_PATH_LITERAL("wallpaper_thumbnails"));
 397       break;
 398     case chrome::DIR_CHROMEOS_CUSTOM_WALLPAPERS:
 399       if (!PathService::Get(chrome::DIR_USER_DATA, &cur))
 400         return false;
 401       cur = cur.Append(FILE_PATH_LITERAL("custom_wallpapers"));
 402       break;
 403 #endif
 404 #if defined(OS_LINUX) && defined(ENABLE_MANAGED_USERS)
 405     case chrome::DIR_MANAGED_USERS_DEFAULT_APPS:
 406       if (!PathService::Get(chrome::DIR_STANDALONE_EXTERNAL_EXTENSIONS, &cur))
 407         return false;
 408       cur = cur.Append(FILE_PATH_LITERAL("managed_users"));
 409       break;
 410 #endif
 411     // The following are only valid in the development environment, and
 412     // will fail if executed from an installed executable (because the
 413     // generated path won't exist).
 414     case chrome::DIR_GEN_TEST_DATA:
 415       if (!PathService::Get(base::DIR_MODULE, &cur))
 416         return false;
 417       cur = cur.Append(FILE_PATH_LITERAL("test_data"));
 418       if (!base::PathExists(cur))  // We don't want to create this.
 419         return false;
 420       break;
 421     case chrome::DIR_TEST_DATA:
 422       if (!PathService::Get(base::DIR_SOURCE_ROOT, &cur))
 423         return false;
 424       cur = cur.Append(FILE_PATH_LITERAL("chrome"));
 425       cur = cur.Append(FILE_PATH_LITERAL("test"));
 426       cur = cur.Append(FILE_PATH_LITERAL("data"));
 427       if (!base::PathExists(cur))  // We don't want to create this.
 428         return false;
 429       break;
 430     case chrome::DIR_TEST_TOOLS:
 431       if (!PathService::Get(base::DIR_SOURCE_ROOT, &cur))
 432         return false;
 433       cur = cur.Append(FILE_PATH_LITERAL("chrome"));
 434       cur = cur.Append(FILE_PATH_LITERAL("tools"));
 435       cur = cur.Append(FILE_PATH_LITERAL("test"));
 436       if (!base::PathExists(cur))  // We don't want to create this
 437         return false;
 438       break;
 439 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_OPENBSD)
 440     case chrome::DIR_POLICY_FILES: {
 441 #if defined(GOOGLE_CHROME_BUILD)
 442       cur = base::FilePath(FILE_PATH_LITERAL("/etc/opt/chrome/policies"));
 443 #else
 444       cur = base::FilePath(FILE_PATH_LITERAL("/etc/chromium/policies"));
 445 #endif
 446       break;
 447     }
 448 #endif
 449 #if defined(OS_MACOSX) && !defined(OS_IOS)
 450     case chrome::DIR_MANAGED_PREFS: {
 451       if (!GetLocalLibraryDirectory(&cur))
 452         return false;
 453       cur = cur.Append(FILE_PATH_LITERAL("Managed Preferences"));
 454       char* login = getlogin();
 455       if (!login)
 456         return false;
 457       cur = cur.AppendASCII(login);
 458       if (!base::PathExists(cur))  // We don't want to create this.
 459         return false;
 460       break;
 461     }
 462 #endif
 463 #if defined(OS_CHROMEOS) || (defined(OS_MACOSX) && !defined(OS_IOS))
 464     case chrome::DIR_USER_EXTERNAL_EXTENSIONS: {
 465       if (!PathService::Get(chrome::DIR_USER_DATA, &cur))
 466         return false;
 467       cur = cur.Append(FILE_PATH_LITERAL("External Extensions"));
 468       break;
 469     }
 470 #endif
 471 #if defined(OS_LINUX)
 472     case chrome::DIR_STANDALONE_EXTERNAL_EXTENSIONS: {
 473       cur = base::FilePath(kFilepathSinglePrefExtensions);
 474       break;
 475     }
 476 #endif
 477     case chrome::DIR_EXTERNAL_EXTENSIONS:
 478 #if defined(OS_MACOSX) && !defined(OS_IOS)
 479       if (!chrome::GetGlobalApplicationSupportDirectory(&cur))
 480         return false;
 481
 482       cur = cur.Append(FILE_PATH_LITERAL("Google"))
 483                .Append(FILE_PATH_LITERAL("Chrome"))
 484                .Append(FILE_PATH_LITERAL("External Extensions"));
 485       create_dir = false;
 486 #else
 487       if (!PathService::Get(base::DIR_MODULE, &cur))
 488         return false;
 489
 490       cur = cur.Append(FILE_PATH_LITERAL("extensions"));
 491       create_dir = true;
 492 #endif
 493       break;
 494
 495     case chrome::DIR_DEFAULT_APPS:
 496 #if defined(OS_MACOSX)
 497       cur = base::mac::FrameworkBundlePath();
 498       cur = cur.Append(FILE_PATH_LITERAL("Default Apps"));
 499 #else
 500       if (!PathService::Get(chrome::DIR_APP, &cur))
 501         return false;
 502       cur = cur.Append(FILE_PATH_LITERAL("default_apps"));
 503 #endif
 504       break;
 505
 506 #if defined(OS_LINUX) || (defined(OS_MACOSX) && !defined(OS_IOS))
 507     case chrome::DIR_NATIVE_MESSAGING:
 508 #if defined(OS_MACOSX)
 509 #if defined(GOOGLE_CHROME_BUILD)
 510       cur = base::FilePath(FILE_PATH_LITERAL(
 511            "/Library/Google/Chrome/NativeMessagingHosts"));
 512 #else
 513       cur = base::FilePath(FILE_PATH_LITERAL(
 514           "/Library/Application Support/Chromium/NativeMessagingHosts"));
 515 #endif
 516 #else  // defined(OS_MACOSX)
 517 #if defined(GOOGLE_CHROME_BUILD)
 518       cur = base::FilePath(FILE_PATH_LITERAL(
 519           "/etc/opt/chrome/native-messaging-hosts"));
 520 #else
 521       cur = base::FilePath(FILE_PATH_LITERAL(
 522           "/etc/chromium/native-messaging-hosts"));
 523 #endif
 524 #endif  // !defined(OS_MACOSX)
 525       break;
 526
 527     case chrome::DIR_USER_NATIVE_MESSAGING:
 528       if (!PathService::Get(chrome::DIR_USER_DATA, &cur))
 529         return false;
 530       cur = cur.Append(FILE_PATH_LITERAL("NativeMessagingHosts"));
 531       break;
 532 #endif  // defined(OS_LINUX) || (defined(OS_MACOSX) && !defined(OS_IOS))
 533
 534     default:
 535       return false;
 536   }
 537
 538   // TODO(bauerb): http://crbug.com/259796
 539   base::ThreadRestrictions::ScopedAllowIO allow_io;
 540   if (create_dir && !base::PathExists(cur) &&
 541       !base::CreateDirectory(cur))
 542     return false;
 543
 544   *result = cur;
 545   return true;
 546 }
 547
 548 // This cannot be done as a static initializer sadly since Visual Studio will
 549 // eliminate this object file if there is no direct entry point into it.
 550 void RegisterPathProvider() {
 551   PathService::RegisterProvider(PathProvider, PATH_START, PATH_END);
 552 }
 553
 554 }  // namespace chrome