Add installer::SetupSingleton.

chrome/installer/util/util_constants.h

 // 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.
 //
 // Defines all install related constants that need to be used by Chrome as
 // well as Chrome Installer.
 
 #ifndef CHROME_INSTALLER_UTIL_UTIL_CONSTANTS_H_
 #define CHROME_INSTALLER_UTIL_UTIL_CONSTANTS_H_
 
 #include <stddef.h>
 
 namespace installer {
 
 // Return status of installer. Values in this enum must not change. Always add
 // to the end. When removing an unused value, retain the deprecated name and
 // value in a comment for posterity's sake, but take the liberty of removing the
 // old doc string.
 enum InstallStatus {
-  FIRST_INSTALL_SUCCESS = 0,  // First install of Chrome succeeded.
-  INSTALL_REPAIRED      = 1,  // Same version reinstalled for repair.
-  NEW_VERSION_UPDATED   = 2,  // Chrome successfully updated to new version.
+  FIRST_INSTALL_SUCCESS = 0,      // First install of Chrome succeeded.
+  INSTALL_REPAIRED = 1,           // Same version reinstalled for repair.
+  NEW_VERSION_UPDATED = 2,        // Chrome successfully updated to new version.
   EXISTING_VERSION_LAUNCHED = 3,  // No work done; launched existing Chrome.
-  HIGHER_VERSION_EXISTS = 4,  // Higher version of Chrome already exists
+  HIGHER_VERSION_EXISTS = 4,      // Higher version of Chrome already exists
   USER_LEVEL_INSTALL_EXISTS = 5,  // User level install already exists.
   SYSTEM_LEVEL_INSTALL_EXISTS = 6,  // Machine level install already exists.
-  INSTALL_FAILED        = 7,  // Install/update failed.
-  SETUP_PATCH_FAILED    = 8,  // Failed to patch setup.exe.
-  OS_NOT_SUPPORTED      = 9,  // Current OS not supported.
-  OS_ERROR             = 10,  // OS API call failed.
-  TEMP_DIR_FAILED      = 11,  // Unable to get Temp directory.
-  UNCOMPRESSION_FAILED = 12,  // Failed to uncompress Chrome archive.
-  INVALID_ARCHIVE      = 13,  // Something wrong with the installer archive.
-  INSUFFICIENT_RIGHTS  = 14,  // User trying system level install is not Admin.
+  INSTALL_FAILED = 7,               // Install/update failed.
+  SETUP_PATCH_FAILED = 8,           // Failed to patch setup.exe.
+  OS_NOT_SUPPORTED = 9,             // Current OS not supported.
+  OS_ERROR = 10,                    // OS API call failed.
+  TEMP_DIR_FAILED = 11,             // Unable to get Temp directory.
+  UNCOMPRESSION_FAILED = 12,        // Failed to uncompress Chrome archive.
+  INVALID_ARCHIVE = 13,       // Something wrong with the installer archive.
+  INSUFFICIENT_RIGHTS = 14,   // User trying system level install is not Admin.
   CHROME_NOT_INSTALLED = 15,  // Chrome not installed (returned in case of
                               // uninstall).
-  CHROME_RUNNING       = 16,  // Chrome currently running (when trying to
+  CHROME_RUNNING = 16,        // Chrome currently running (when trying to
                               // uninstall).
-  UNINSTALL_CONFIRMED  = 17,  // User has confirmed Chrome uninstall.
+  UNINSTALL_CONFIRMED = 17,   // User has confirmed Chrome uninstall.
   UNINSTALL_DELETE_PROFILE = 18,  // User okayed uninstall and profile deletion.
-  UNINSTALL_SUCCESSFUL = 19,  // Chrome successfully uninstalled.
-  UNINSTALL_FAILED     = 20,  // Chrome uninstallation failed.
-  UNINSTALL_CANCELLED  = 21,  // User cancelled Chrome uninstallation.
-  UNKNOWN_STATUS       = 22,  // Unknown status (this should never happen).
-  RENAME_SUCCESSFUL    = 23,  // Rename of new_chrome.exe to chrome.exe worked.
-  RENAME_FAILED        = 24,  // Rename of new_chrome.exe failed.
-  EULA_REJECTED        = 25,  // EULA dialog was not accepted by user.
-  EULA_ACCEPTED        = 26,  // EULA dialog was accepted by user.
+  UNINSTALL_SUCCESSFUL = 19,      // Chrome successfully uninstalled.
+  UNINSTALL_FAILED = 20,          // Chrome uninstallation failed.
+  UNINSTALL_CANCELLED = 21,       // User cancelled Chrome uninstallation.
+  UNKNOWN_STATUS = 22,            // Unknown status (this should never happen).
+  RENAME_SUCCESSFUL = 23,     // Rename of new_chrome.exe to chrome.exe worked.
+  RENAME_FAILED = 24,         // Rename of new_chrome.exe failed.
+  EULA_REJECTED = 25,         // EULA dialog was not accepted by user.
+  EULA_ACCEPTED = 26,         // EULA dialog was accepted by user.
   EULA_ACCEPTED_OPT_IN = 27,  // EULA accepted with the crash option selected.
-  INSTALL_DIR_IN_USE   = 28,  // Installation directory is in use by another
+  INSTALL_DIR_IN_USE = 28,    // Installation directory is in use by another
                               // process
   UNINSTALL_REQUIRES_REBOOT = 29,  // Uninstallation required a reboot.
-  IN_USE_UPDATED       = 30,  // Chrome successfully updated but old version
-                              // running.
+  IN_USE_UPDATED = 30,  // Chrome successfully updated but old version
+                        // running.
   SAME_VERSION_REPAIR_FAILED = 31,  // Chrome repair failed as Chrome was
                                     // running.
-  REENTRY_SYS_UPDATE   = 32,  // Setup has been re-launched as the interactive
-                              // user.
+  REENTRY_SYS_UPDATE = 32,  // Setup has been re-launched as the interactive
+                            // user.
   SXS_OPTION_NOT_SUPPORTED = 33,  // The chrome-sxs option provided does not
                                   // work with other command line options.
   // NON_MULTI_INSTALLATION_EXISTS = 34,
   // MULTI_INSTALLATION_EXISTS = 35,
   // READY_MODE_OPT_IN_FAILED = 36,
   // READY_MODE_TEMP_OPT_OUT_FAILED = 37,
   // READY_MODE_END_TEMP_OPT_OUT_FAILED = 38,
   // CONFLICTING_CHANNEL_EXISTS = 39,
   // READY_MODE_REQUIRES_CHROME = 40,
   // APP_HOST_REQUIRES_MULTI_INSTALL = 41,
   APPLY_DIFF_PATCH_FAILED = 42,  // Failed to apply a diff patch.
   // INCONSISTENT_UPDATE_POLICY = 43,
   // APP_HOST_REQUIRES_USER_LEVEL = 44,
   // APP_HOST_REQUIRES_BINARIES = 45,
   // INSTALL_OF_GOOGLE_UPDATE_FAILED = 46,
   INVALID_STATE_FOR_OPTION = 47,  // A non-install option was called with an
                                   // invalid installer state.
   // WAIT_FOR_EXISTING_FAILED = 48,
-  PATCH_INVALID_ARGUMENTS = 49,  // The arguments of --patch were missing or
-                                 // they were invalid for any reason.
+  PATCH_INVALID_ARGUMENTS = 49,    // The arguments of --patch were missing or
+                                   // they were invalid for any reason.
   DIFF_PATCH_SOURCE_MISSING = 50,  // No previous version archive found for
                                    // differential update.
-  UNUSED_BINARIES      = 51,  // No multi-install products to update. The
-                              // binaries will be uninstalled if they are not
-                              // in use.
+  UNUSED_BINARIES = 51,            // No multi-install products to update. The
+  // binaries will be uninstalled if they are not

[grt (UTC plus 2), 2016/09/01 21:22:41]

gah, this is ugly, please ignore "git cl format" and make this pretty again!

[fdoray, 2016/09/06 17:29:39]

Done.

+  // in use.
   UNUSED_BINARIES_UNINSTALLED = 52,  // The binaries were uninstalled.
-  UNSUPPORTED_OPTION   = 53,  // An unsupported legacy option was given.
-  CPU_NOT_SUPPORTED    = 54,  // Current OS not supported
-  REENABLE_UPDATES_SUCCEEDED = 55,  // Autoupdates are now enabled.
-  REENABLE_UPDATES_FAILED = 56,  // Autoupdates could not be enabled.
-  UNPACKING_FAILED     = 57,  // Unpacking the (possibly patched) uncompressed
-                              // archive failed.
-  IN_USE_DOWNGRADE     = 58,  // Successfully downgrade chrome but current
-                              // version is still running.
+  UNSUPPORTED_OPTION = 53,           // An unsupported legacy option was given.
+  CPU_NOT_SUPPORTED = 54,            // Current OS not supported
+  REENABLE_UPDATES_SUCCEEDED = 55,   // Autoupdates are now enabled.
+  REENABLE_UPDATES_FAILED = 56,      // Autoupdates could not be enabled.
+  UNPACKING_FAILED = 57,       // Unpacking the (possibly patched) uncompressed
+                               // archive failed.
+  IN_USE_DOWNGRADE = 58,       // Successfully downgrade chrome but current
+                               // version is still running.
   OLD_VERSION_DOWNGRADE = 59,  // Successfully downgrade chrome to an older
                                // version.
+  SETUP_SINGLETON_ACQUISITION_FAILED = 60,  // The setup process could not
+                                            // acquire the exclusive right to
+                                            // modify the Chrome installation.
 
-  MAX_INSTALL_STATUS   = 60,  // Bump this out to make space for new results.
+  MAX_INSTALL_STATUS = 61,  // Bump this out to make space for new results.
 };
 
 // The type of an update archive.
 enum ArchiveType {
   UNKNOWN_ARCHIVE_TYPE,     // Unknown or uninitialized.
   FULL_ARCHIVE_TYPE,        // Full chrome.7z archive.
   INCREMENTAL_ARCHIVE_TYPE  // Incremental or differential archive.
 };
 
 // Stages of an installation from which a progress indication is derived.
@@ skipping 144 matching lines @@
 extern const char kCourgette[];
 extern const char kBsdiff[];
 
 // Name of the allocator (and associated file) for storing histograms to be
 // reported by Chrome during its next upload.
 extern const char kSetupHistogramAllocatorName[];
 
 }  // namespace installer
 
 #endif  // CHROME_INSTALLER_UTIL_UTIL_CONSTANTS_H_