chromeos: Remove the last IME methods from ash::SystemTrayDelegate

chrome/browser/ui/ash/system_tray_delegate_chromeos.h

Index: chrome/browser/ui/ash/system_tray_delegate_chromeos.h
diff --git a/chrome/browser/ui/ash/system_tray_delegate_chromeos.h b/chrome/browser/ui/ash/system_tray_delegate_chromeos.h
index a4a1690a5f7f08d81d860259563e9d86ab21ea7b..34ba99c6dcbd2b69708dc746d4573d3aa6f0072b 100644
--- a/chrome/browser/ui/ash/system_tray_delegate_chromeos.h
+++ b/chrome/browser/ui/ash/system_tray_delegate_chromeos.h
@@ -12,7 +12,6 @@
 #include <vector>
 
 #include "ash/accessibility_types.h"
-#include "ash/system/tray/ime_info.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "base/macros.h"
 #include "base/observer_list.h"
@@ -33,6 +32,7 @@ class SystemTrayNotifier;
 
 namespace chromeos {
 
+// TODO(jamescook): Move observation of IME state into ash.
 class SystemTrayDelegateChromeOS
     : public ui::ime::InputMethodMenuManager::Observer,
       public ash::SystemTrayDelegate,
@@ -48,9 +48,6 @@ class SystemTrayDelegateChromeOS
   // Overridden from ash::SystemTrayDelegate:
   void Initialize() override;
   void ShowUserLogin() override;
-  void GetCurrentIME(ash::IMEInfo* info) override;
-  void GetAvailableIMEList(ash::IMEInfoList* list) override;
-  void GetCurrentIMEProperties(ash::IMEPropertyInfoList* list) override;
   ash::NetworkingConfigDelegate* GetNetworkingConfigDelegate() const override;
   bool GetSessionStartTime(base::TimeTicks* session_start_time) override;
   bool GetSessionLengthLimit(base::TimeDelta* session_length_limit) override;