Implementing --app-launcher install/uninstall flow.

chrome/installer/util/util_constants.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/util/util_constants.h"
 
 namespace installer {
 
 namespace switches {
 
 // Whether to set Chrome to launch at computer startup.
 const char kAutoLaunchChrome[] = "auto-launch-chrome";
 
 // Install Chrome.
 // Currently this is only required when used in combination with kMultiInstall.
 const char kChrome[] = "chrome";
 
 // Install Chrome App Host.
 const char kChromeAppHost[] = "app-host";
 
+// Install Chrome App Launcher, which subsumes Chrome App Host, i.e.,
+// App Launcher install converts App Host to App Launcher, and all subsequent
+// App Host updates/uninstalls become App Launcher updates/uninstalls.
+const char kChromeAppLauncher[] = "app-launcher";
+
 // Install Chrome Frame.
 const char kChromeFrame[] = "chrome-frame";
 
 // Installs Chrome Frame from an already installed multi-install of Chrome.
 const char kChromeFrameQuickEnable[] = "quick-enable-cf";
 
 // When installing Chrome Frame, install it in ready mode.
 // If --chrome-frame is not on the command line, this switch has no effect.
 const char kChromeFrameReadyMode[] = "ready-mode";
 
@@ skipping 184 matching lines @@
 const wchar_t kInstallerResult[] = L"InstallerResult";
 const wchar_t kInstallerResultUIString[] = L"InstallerResultUIString";
 const wchar_t kInstallerSuccessLaunchCmdLine[] =
     L"InstallerSuccessLaunchCmdLine";
 
 // The presence of this environment variable with a value of 1 implies that
 // we should run as a system installation regardless of what is on the
 // command line.
 const char kGoogleUpdateIsMachineEnvVar[] = "GoogleUpdateIsMachine";
 
+const wchar_t kOptionAppHostIsLauncher[] = L"app-host-is-launcher";
 const wchar_t kOptionMultiInstall[] = L"multi-install";
 const wchar_t kOptionReadyMode[] = L"ready-mode";
 
 // Chrome channel display names.
 const wchar_t kChromeChannelUnknown[] = L"unknown";
 const wchar_t kChromeChannelCanary[] = L"canary";
 const wchar_t kChromeChannelDev[] = L"dev";
 const wchar_t kChromeChannelBeta[] = L"beta";
 const wchar_t kChromeChannelStable[] = L"";
 
 const size_t kMaxAppModelIdLength = 64U;
 
 }  // namespace installer