Implement installation of the Chrome App Host.

chrome/installer/mini_installer/configuration.cc

Index: chrome/installer/mini_installer/configuration.cc
diff --git a/chrome/installer/mini_installer/configuration.cc b/chrome/installer/mini_installer/configuration.cc
index cebe50cb944ae804c953d4f97cfe37b9f032580d..e552bce9c6c531d2004e258dfb74f60b2ff17fbe 100644
--- a/chrome/installer/mini_installer/configuration.cc
+++ b/chrome/installer/mini_installer/configuration.cc
@@ -34,6 +34,7 @@ void Configuration::Clear() {
   argument_count_ = 0;
   has_chrome_ = false;
   has_chrome_frame_ = false;
+  has_app_host_ = false;
   is_multi_install_ = false;
   is_system_level_ = false;
 }
@@ -59,6 +60,8 @@ bool Configuration::InitializeFromCommandLine(const wchar_t* command_line) {
         has_chrome_ = true;
       else if (0 == ::lstrcmpi(args_[i], L"--chrome-frame"))
         has_chrome_frame_ = true;
+      else if (0 == ::lstrcmpi(args_[i], L"--app-host"))
+        has_app_host_ = true;
       else if (0 == ::lstrcmpi(args_[i], L"--multi-install"))
         is_multi_install_ = true;
       else if (0 == ::lstrcmpi(args_[i], L"--system-level"))
@@ -67,9 +70,9 @@ bool Configuration::InitializeFromCommandLine(const wchar_t* command_line) {
         operation_ = CLEANUP;
     }
 
-    // Single-install is either Chrome or Chrome Frame.
+    // Single-install defaults to Chrome.
     if (!is_multi_install_)
-      has_chrome_ = !has_chrome_frame_;
+      has_chrome_ = !(has_chrome_frame_ || has_app_host_);

[grt (UTC plus 2), 2012/07/12 18:37:10]

is more needed here?  what happens if --app-host is given (possibly with
--chrome-frame) without --multi-install?  i haven't reviewed the rest of the CL
yet, but assuming that --multi-install is always required for --app-host, i
think it makes sense to put "has_app_host_ = false;" within this
!is_multi_install_ block.

[erikwright (departed), 2012/07/16 20:13:11]

I think I'd rather leave this class responsible for simply interpreting the
command line and then in setup main do the verification that in single mode
exactly one product is specified and that app-host is only used in multi mode.

   }
   return args_ != NULL;
 }