Adding commandline switch and user pref for autofill server url.

chrome/common/pref_names.cc

Index: chrome/common/pref_names.cc
diff --git a/chrome/common/pref_names.cc b/chrome/common/pref_names.cc
index 8ebff595fbbcb7d6c1bdb2f71697713033a7b26f..b3534c0376db4f073a98b706cd2d9d1db0d6ab30 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -1016,6 +1016,9 @@ const char kAutofillNegativeUploadRate[] = "autofill.negative_upload_rate";
 // Boolean option set to true on the first run. Non-persistent.
 const char kAutofillPersonalDataManagerFirstRun[] = "autofill.pdm.first_run";
 
+// String that indicates the base url of the autofill service.
+const char kAutofillServiceUrl[] = "autofill.service.url";
+
 // Modifying bookmarks is completely disabled when this is set to false.
 const char kEditBookmarksEnabled[] = "bookmarks.editing_enabled";