Revert of ChromeOS: "Add New User" screen should enable all hardware keyboards.

chrome/browser/chromeos/input_method/input_method_persistence.h

Index: chrome/browser/chromeos/input_method/input_method_persistence.h
diff --git a/chrome/browser/chromeos/input_method/input_method_persistence.h b/chrome/browser/chromeos/input_method/input_method_persistence.h
index a9fe28cbc5995da8967c9676c4de2366138a0e70..f103a322cbad7e919d8c771bdd003e96cfb133e0 100644
--- a/chrome/browser/chromeos/input_method/input_method_persistence.h
+++ b/chrome/browser/chromeos/input_method/input_method_persistence.h
@@ -10,8 +10,6 @@
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "chromeos/ime/input_method_manager.h"
-
-class PrefService;
 
 namespace chromeos {
 namespace input_method {
@@ -41,10 +39,6 @@
   DISALLOW_COPY_AND_ASSIGN(InputMethodPersistence);
 };
 
-void SetUserLRUInputMethodPreferenceForTesting(const std::string& username,
-                                               const std::string& input_method,
-                                               PrefService* local_state);
-
 }  // namespace input_method
 }  // namespace chromeos