Reduce CPU usage for input method switching.

chrome/browser/chromeos/login/keyboard_switch_menu.h

Index: chrome/browser/chromeos/login/keyboard_switch_menu.h
diff --git a/chrome/browser/chromeos/login/keyboard_switch_menu.h b/chrome/browser/chromeos/login/keyboard_switch_menu.h
index 64bd2aa8fe9969a1dff6be61f8773b4d810ff883..e1476f60e296cb0a69e0e2680e459609887fe191 100644
--- a/chrome/browser/chromeos/login/keyboard_switch_menu.h
+++ b/chrome/browser/chromeos/login/keyboard_switch_menu.h
@@ -23,8 +23,10 @@ class KeyboardSwitchMenu : public InputMethodMenu {
   virtual ~KeyboardSwitchMenu() {}
 
   // InputMethodMenu::InputMethodMenuHost implementation.
-  virtual void UpdateUI(
-      const std::wstring& name, const std::wstring& tooltip);
+  virtual void UpdateUI(const std::string& id,
+                        const std::wstring& name,
+                        const std::wstring& tooltip,
+                        size_t num_active_input_methods);
   virtual bool ShouldSupportConfigUI() { return false; }
   virtual void OpenConfigUI() {}