Support --delete-old-versions in setup.exe.

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_
 
@@ skipping 77 matching lines @@
   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.
+  SETUP_SINGLETON_RELEASED           = 61,  // The task did not complete because
+                                            // another process asked this
+                                            // process to release the exclusive
+                                            // right to modify the Chrome
+                                            // installation.
+  DELETE_OLD_VERSIONS_SUCCESS        = 62,  // All files that belong to old
+                                            // versions of Chrome were
+                                            // successfully deleted.
+  DELETE_OLD_VERSIONS_TOO_MANY_ATTEMPTS = 63,  // A --delete-old-versions
+                                               // process exited after trying to
+                                               // delete all files that belong
+                                               // to old versions of Chrome too
+                                               // many times without success.
 
-  MAX_INSTALL_STATUS   = 61,  // Bump this out to make space for new results.
+  MAX_INSTALL_STATUS   = 64,  // When adding a new result, bump this and update
+                              // the InstallStatus enum in histograms.xml.
 };
 
 // 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 23 matching lines @@
   NUM_STAGES                  // The number of stages.
 };
 
 namespace switches {
 
 extern const char kChrome[];
 extern const char kChromeFrame[];
 extern const char kChromeSxS[];
 extern const char kConfigureUserSettings[];
 extern const char kCriticalUpdateVersion[];
+extern const char kDeleteOldVersions[];
 extern const char kDeleteProfile[];
 extern const char kDisableLogging[];
 extern const char kDoNotLaunchChrome[];
 extern const char kDoNotRegisterForUpdateLaunch[];
 extern const char kDoNotRemoveSharedItems[];
 extern const char kEnableLogging[];
 extern const char kForceConfigureUserSettings[];
 extern const char kForceUninstall[];
 extern const char kInstallArchive[];
 extern const char kInstallerData[];
@@ skipping 101 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_