Reduce FOR_EACH_OBSERVER usage in ui/

ui/base/ime/chromeos/ime_keyboard.cc

Index: ui/base/ime/chromeos/ime_keyboard.cc
diff --git a/ui/base/ime/chromeos/ime_keyboard.cc b/ui/base/ime/chromeos/ime_keyboard.cc
index 581a3c5aebc977668dd0190005147ae7a399222d..e07719b98c005cfa37bf7fef687269ffabdb2f44 100644
--- a/ui/base/ime/chromeos/ime_keyboard.cc
+++ b/ui/base/ime/chromeos/ime_keyboard.cc
@@ -79,8 +79,8 @@ void ImeKeyboard::SetCapsLockEnabled(bool enable_caps_lock) {
   bool old_state = caps_lock_is_enabled_;
   caps_lock_is_enabled_ = enable_caps_lock;
   if (old_state != enable_caps_lock) {
-    FOR_EACH_OBSERVER(ImeKeyboard::Observer, observers_,
-                      OnCapsLockChanged(enable_caps_lock));
+    for (auto& observer : observers_)
+      observer.OnCapsLockChanged(enable_caps_lock);
   }
 }