Revert of Remove installation of Chrome Frame.

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 c6c11b8d57e61f4eec696527bdcdc93a3419cc9f..2f61e62b0ec38bf801c8efb514c18fabe334758d 100644
--- a/chrome/installer/util/util_constants.h
+++ b/chrome/installer/util/util_constants.h
@@ -88,13 +88,12 @@
                                // binaries will be uninstalled if they are not
                                // in use.
   UNUSED_BINARIES_UNINSTALLED,  // 52. The binaries were uninstalled.
-  UNSUPPORTED_OPTION,          // 53. An unsupported legacy option was given.
   // Friendly reminder: note the COMPILE_ASSERT below.
 };
 
 
 // Existing InstallStatus values must not change.  Always add to the end.
-COMPILE_ASSERT(installer::UNSUPPORTED_OPTION == 53,
+COMPILE_ASSERT(installer::UNUSED_BINARIES_UNINSTALLED == 52,
                dont_change_enum);
 
 // The type of an update archive.
@@ -161,6 +160,7 @@
 extern const char kInstallerData[];
 extern const char kLogFile[];
 extern const char kMakeChromeDefault[];
+extern const char kMigrateChromeFrame[];
 extern const char kMsi[];
 extern const char kMultiInstall[];
 extern const char kNewSetupExe[];