Remove the very old code that migrated password data from the WebDataService to PasswordStore.

chrome/browser/password_manager/password_store_x.cc

Index: chrome/browser/password_manager/password_store_x.cc
===================================================================
--- chrome/browser/password_manager/password_store_x.cc	(revision 133948)
+++ chrome/browser/password_manager/password_store_x.cc	(working copy)
@@ -24,9 +24,8 @@
 
 PasswordStoreX::PasswordStoreX(LoginDatabase* login_db,
                                Profile* profile,
-                               WebDataService* web_data_service,
                                NativeBackend* backend)
-    : PasswordStoreDefault(login_db, profile, web_data_service),
+    : PasswordStoreDefault(login_db, profile),
       backend_(backend), migration_checked_(!backend), allow_fallback_(false) {
 }