chromeos-events: Remove SystemKeyEventListener::ModifierObservers.

chrome/browser/chromeos/events/system_key_event_listener.cc

Index: chrome/browser/chromeos/events/system_key_event_listener.cc
diff --git a/chrome/browser/chromeos/events/system_key_event_listener.cc b/chrome/browser/chromeos/events/system_key_event_listener.cc
index b741c16c860aa772e5a03f0541e0bbbbc64da8d2..70202af62fc9488d77f7be835c9d1e85c94319fa 100644
--- a/chrome/browser/chromeos/events/system_key_event_listener.cc
+++ b/chrome/browser/chromeos/events/system_key_event_listener.cc
@@ -44,7 +44,6 @@ SystemKeyEventListener* SystemKeyEventListener::GetInstance() {
 SystemKeyEventListener::SystemKeyEventListener()
     : stopped_(false),
       num_lock_mask_(0),
-      pressed_modifiers_(0),
       xkb_event_base_(0) {
   input_method::XKeyboard* xkeyboard =
       input_method::InputMethodManager::Get()->GetXKeyboard();
@@ -87,20 +86,11 @@ void SystemKeyEventListener::AddCapsLockObserver(CapsLockObserver* observer) {
   caps_lock_observers_.AddObserver(observer);
 }
 
-void SystemKeyEventListener::AddModifiersObserver(ModifiersObserver* observer) {
-  modifiers_observers_.AddObserver(observer);
-}
-
 void SystemKeyEventListener::RemoveCapsLockObserver(
     CapsLockObserver* observer) {
   caps_lock_observers_.RemoveObserver(observer);
 }
 
-void SystemKeyEventListener::RemoveModifiersObserver(
-    ModifiersObserver* observer) {
-  modifiers_observers_.RemoveObserver(observer);
-}
-
 base::EventStatus SystemKeyEventListener::WillProcessEvent(
     const base::NativeEvent& event) {
   return ProcessedXEvent(event) ? base::EVENT_HANDLED : base::EVENT_CONTINUE;
@@ -115,12 +105,6 @@ void SystemKeyEventListener::OnCapsLock(bool enabled) {
                     OnCapsLockChange(enabled));
 }
 
-void SystemKeyEventListener::OnModifiers(int state) {
-  FOR_EACH_OBSERVER(ModifiersObserver,
-                    modifiers_observers_,
-                    OnModifiersChange(state));
-}
-
 bool SystemKeyEventListener::ProcessedXEvent(XEvent* xevent) {
   input_method::InputMethodManager* input_method_manager =
       input_method::InputMethodManager::Get();
@@ -141,17 +125,6 @@ bool SystemKeyEventListener::ProcessedXEvent(XEvent* xevent) {
             input_method::kDontChange  /* caps lock */,
             input_method::kDisableLock  /* num lock */);
       }
-      int current_modifiers = 0;
-      if (xkey_event->state.mods & ShiftMask)
-        current_modifiers |= ModifiersObserver::SHIFT_PRESSED;
-      if (xkey_event->state.mods & ControlMask)
-        current_modifiers |= ModifiersObserver::CTRL_PRESSED;
-      if (xkey_event->state.mods & Mod1Mask)
-        current_modifiers |= ModifiersObserver::ALT_PRESSED;
-      if (current_modifiers != pressed_modifiers_) {
-        pressed_modifiers_ = current_modifiers;
-        OnModifiers(pressed_modifiers_);
-      }
       return true;
     }
   }