Uninstall multi-install Chrome Frame when updated.

chrome/installer/util/install_util.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.
 //
 // See the corresponding header file for description of the functions in this
 // file.
 
 #include "chrome/installer/util/install_util.h"
 
 #include <shellapi.h>
@@ skipping 39 matching lines @@
 const wchar_t kStagePreconditions[] = L"preconditions";
 const wchar_t kStageRefreshingPolicy[] = L"refreshing_policy";
 const wchar_t kStageRegisteringChrome[] = L"registering_chrome";
 const wchar_t kStageRemovingOldVersions[] = L"removing_old_ver";
 const wchar_t kStageRollingback[] = L"rollingback";
 const wchar_t kStageUncompressing[] = L"uncompressing";
 const wchar_t kStageUnpacking[] = L"unpacking";
 const wchar_t kStageUpdatingChannels[] = L"updating_channels";
 const wchar_t kStageCreatingVisualManifest[] = L"creating_visual_manifest";
 const wchar_t kStageDeferringToHigherVersion[] = L"deferring_to_higher_version";
+const wchar_t kStageUninstallingBinaries[] = L"uninstalling_binaries";
+const wchar_t kStageUninstallingChromeFrame[] = L"uninstalling_chrome_frame";
 
 const wchar_t* const kStages[] = {
   NULL,
   kStagePreconditions,
   kStageUncompressing,
   kStageEnsemblePatching,
   kStageBinaryPatching,
   kStageUnpacking,
   kStageBuilding,
   kStageExecuting,
   kStageRollingback,
   kStageRefreshingPolicy,
   kStageUpdatingChannels,
   kStageCopyingPreferencesFile,
   kStageCreatingShortcuts,
   kStageRegisteringChrome,
   kStageRemovingOldVersions,
   kStageFinishing,
   kStageConfiguringAutoLaunch,
   kStageCreatingVisualManifest,
   kStageDeferringToHigherVersion,
+  kStageUninstallingBinaries,
+  kStageUninstallingChromeFrame,
 };
 
 COMPILE_ASSERT(installer::NUM_STAGES == arraysize(kStages),
                kStages_disagrees_with_Stage_comma_they_must_match_bang);
 
 // Creates a zero-sized non-decorated foreground window that doesn't appear
 // in the taskbar. This is used as a parent window for calls to ShellExecuteEx
 // in order for the UAC dialog to appear in the foreground and for focus
 // to be returned to this process once the UAC task is dismissed. Returns
 // NULL on failure, a handle to the UAC window on success.
@@ skipping 530 matching lines @@
   // Open the program and see if it references the expected file.
   base::win::ScopedHandle handle;
   BY_HANDLE_FILE_INFORMATION info = {};
 
   return (OpenForInfo(path, &handle) &&
           GetInfo(handle, &info) &&
           info.dwVolumeSerialNumber == file_info_.dwVolumeSerialNumber &&
           info.nFileIndexHigh == file_info_.nFileIndexHigh &&
           info.nFileIndexLow == file_info_.nFileIndexLow);
 }