Implement installation of the Chrome App Host.

chrome/installer/mini_installer/configuration.h

Index: chrome/installer/mini_installer/configuration.h
diff --git a/chrome/installer/mini_installer/configuration.h b/chrome/installer/mini_installer/configuration.h
index b328871a0321c49a3f9e5770760647d1c1a6203c..ab3de2296c89f4ad0b4e5d9f3c1a4289b9e23dab 100644
--- a/chrome/installer/mini_installer/configuration.h
+++ b/chrome/installer/mini_installer/configuration.h
@@ -47,6 +47,9 @@ class Configuration {
   // Returns true if --chrome-frame is on the command line.
   bool has_chrome_frame() const { return has_chrome_frame_; }
 
+  // Returns true if --app-host is on the command line.
+  bool has_app_host() const { return has_app_host_; }
+
   // Returns true if --multi-install is on the command line.
   bool is_multi_install() const { return is_multi_install_; }
 
@@ -64,6 +67,7 @@ class Configuration {
   Operation operation_;
   bool has_chrome_;
   bool has_chrome_frame_;
+  bool has_app_host_;
   bool is_multi_install_;
   bool is_system_level_;