Implementing --app-launcher install/uninstall flow.

chrome/installer/util/util_constants.cc

Index: chrome/installer/util/util_constants.cc
diff --git a/chrome/installer/util/util_constants.cc b/chrome/installer/util/util_constants.cc
index 4112b722e607526904366454bf1ac9b8b1cd6d82..be66cd7dae08ca03a1f50ce9b04e5d1db43cd1ab 100644
--- a/chrome/installer/util/util_constants.cc
+++ b/chrome/installer/util/util_constants.cc
@@ -18,6 +18,9 @@ const char kChrome[] = "chrome";
 // Install Chrome App Host.
 const char kChromeAppHost[] = "app-host";
 
+// Install Chrome App Launcher.

[grt (UTC plus 2), 2012/10/30 13:02:55]

Please add to this comment explaining that, in your words, "--app-host +
--app-launcher = --app-launcher; and if App
Launcher is installed, then --app-host becomes --app-launcher."  But maybe a bit
more gracefully than that.

[huangs, 2012/10/30 20:35:07]

Done.

+const char kChromeAppLauncher[] = "app-launcher";
+
 // Install Chrome Frame.
 const char kChromeFrame[] = "chrome-frame";
 
@@ -223,6 +226,7 @@ const wchar_t kInstallerSuccessLaunchCmdLine[] =
 // 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";