Invoke setup.exe to reenable updates when the update bubble is clicked.

chrome/installer/util/util_constants.h

Index: chrome/installer/util/util_constants.h
diff --git a/chrome/installer/util/util_constants.h b/chrome/installer/util/util_constants.h
index d8ab60a0bd02525fe84422011d44d044c2a45097..d5d6281e99ae47e8b8ae57139f2b83b9e8d71af3 100644
--- a/chrome/installer/util/util_constants.h
+++ b/chrome/installer/util/util_constants.h
@@ -90,12 +90,15 @@ enum InstallStatus {
   UNUSED_BINARIES_UNINSTALLED,  // 52. The binaries were uninstalled.
   UNSUPPORTED_OPTION,          // 53. An unsupported legacy option was given.
   CPU_NOT_SUPPORTED,           // 54. Current OS not supported
+  REENABLE_UPDATES_SUCCEEDED,  // 55. Autoupdates are now enabled.
+  REENABLE_UPDATES_FAILED,     // 56. Autoupdates could not be enabled.
+
   // Friendly reminder: note the COMPILE_ASSERT below.
 };
 
 
 // Existing InstallStatus values must not change.  Always add to the end.
-COMPILE_ASSERT(installer::CPU_NOT_SUPPORTED == 54,
+COMPILE_ASSERT(installer::REENABLE_UPDATES_FAILED == 56,
                dont_change_enum);
 
 // The type of an update archive.
@@ -167,6 +170,7 @@ extern const char kMultiInstall[];
 extern const char kNewSetupExe[];
 extern const char kOnOsUpgrade[];
 extern const char kQueryEULAAcceptance[];
+extern const char kReenableAutoupdates[];
 extern const char kRegisterChromeBrowser[];
 extern const char kRegisterChromeBrowserSuffix[];
 extern const char kRegisterDevChrome[];