Delete old files after an update.

chrome/installer/setup/setup_main.cc

 // 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.
 
 #include "chrome/installer/setup/setup_main.h"
 
 #include <windows.h>
 #include <msi.h>
 #include <shellapi.h>
 #include <shlobj.h>
@@ skipping 33 matching lines @@
 #include "chrome/installer/setup/archive_patch_helper.h"
 #include "chrome/installer/setup/install.h"
 #include "chrome/installer/setup/install_worker.h"
 #include "chrome/installer/setup/installer_crash_reporting.h"
 #include "chrome/installer/setup/installer_metrics.h"
 #include "chrome/installer/setup/setup_constants.h"
 #include "chrome/installer/setup/setup_util.h"
 #include "chrome/installer/setup/uninstall.h"
 #include "chrome/installer/util/browser_distribution.h"
 #include "chrome/installer/util/delete_after_reboot_helper.h"
+#include "chrome/installer/util/delete_old_versions.h"
 #include "chrome/installer/util/delete_tree_work_item.h"
 #include "chrome/installer/util/google_update_constants.h"
 #include "chrome/installer/util/google_update_settings.h"
 #include "chrome/installer/util/google_update_util.h"
 #include "chrome/installer/util/helper.h"
 #include "chrome/installer/util/html_dialog.h"
 #include "chrome/installer/util/install_util.h"
 #include "chrome/installer/util/installation_state.h"
 #include "chrome/installer/util/installation_validator.h"
 #include "chrome/installer/util/installer_state.h"
@@ skipping 252 matching lines @@
                   << BrowserDistribution::GetSpecificDistribution(type)->
                          GetDisplayName();
         }
       }
     }
   }
 }
 
 // This function is called when --rename-chrome-exe option is specified on
 // setup.exe command line. This function assumes an in-use update has happened
-// for Chrome so there should be a file called new_chrome.exe on the file
-// system and a key called 'opv' in the registry. This function will move
+// for Chrome so there should be a file called new_chrome.exe on the file system
+// and a key called 'opv' in the registry. This function will move
 // new_chrome.exe to chrome.exe and delete 'opv' key in one atomic operation.
-// This function also deletes elevation policies associated with the old version
-// if they exist.
+// This function also takes care of deleting files and elevation policies that
+// belong to old versions of Chrome.
 installer::InstallStatus RenameChromeExecutables(
     const InstallationState& original_state,
     InstallerState* installer_state) {
   // See what products are already installed in multi mode.  When we do the
   // rename for multi installs, we must update all installations since they
   // share the binaries.
   AddExistingMultiInstalls(original_state, installer_state);
   const base::FilePath &target_path = installer_state->target_path();
   base::FilePath chrome_exe(target_path.Append(installer::kChromeExe));
   base::FilePath chrome_new_exe(target_path.Append(installer::kChromeNewExe));
@@ skipping 39 matching lines @@
     install_list->AddDeleteRegValueWorkItem(
         reg_root,
         version_key,
         KEY_WOW64_32KEY,
         google_update::kRegCriticalVersionField);
     install_list->AddDeleteRegValueWorkItem(reg_root,
                                             version_key,
                                             KEY_WOW64_32KEY,
                                             google_update::kRegRenameCmdField);
   }
+
+  // Delete old versions.
+  AddDeleteOldVersionsWorkItem(*installer_state, install_list.get());
+
   installer::InstallStatus ret = installer::RENAME_SUCCESSFUL;
   if (!install_list->Do()) {
     LOG(ERROR) << "Renaming of executables failed. Rolling back any changes.";
     install_list->Rollback();
     ret = installer::RENAME_FAILED;
   }
   // temp_path's dtor will take care of deleting or scheduling itself for
   // deletion at reboot when this scope closes.
   VLOG(1) << "Deleting temporary directory " << temp_path.path().value();
 
@@ skipping 1385 matching lines @@
     // to pass through, since this is only returned on uninstall which is
     // never invoked directly by Google Update.
     return_code = InstallUtil::GetInstallReturnCode(install_status);
   }
 
   installer::EndPersistentHistogramStorage(installer_state.target_path());
   VLOG(1) << "Installation complete, returning: " << return_code;
 
   return return_code;
 }