Remove FOR_EACH_OBSERVER macro usage in chrome/browser/extensions

chrome/browser/extensions/api/braille_display_private/braille_controller_brlapi.cc

Index: chrome/browser/extensions/api/braille_display_private/braille_controller_brlapi.cc
diff --git a/chrome/browser/extensions/api/braille_display_private/braille_controller_brlapi.cc b/chrome/browser/extensions/api/braille_display_private/braille_controller_brlapi.cc
index 78e84507d677a81fe3bf0b41b9dcd1ae20590738..cf94cf917d4db6084bf54d83c7511b4e51478811 100644
--- a/chrome/browser/extensions/api/braille_display_private/braille_controller_brlapi.cc
+++ b/chrome/browser/extensions/api/braille_display_private/braille_controller_brlapi.cc
@@ -303,7 +303,8 @@ void BrailleControllerImpl::DispatchKeyEvent(std::unique_ptr<KeyEvent> event) {
     return;
   }
   VLOG(1) << "Dispatching key event: " << *event->ToValue();
-  FOR_EACH_OBSERVER(BrailleObserver, observers_, OnBrailleKeyEvent(*event));
+  for (auto& observer : observers_)
+    observer.OnBrailleKeyEvent(*event);
 }
 
 void BrailleControllerImpl::DispatchOnDisplayStateChanged(
@@ -318,8 +319,8 @@ void BrailleControllerImpl::DispatchOnDisplayStateChanged(
     }
     return;
   }
-  FOR_EACH_OBSERVER(BrailleObserver, observers_,
-                    OnBrailleDisplayStateChanged(*new_state));
+  for (auto& observer : observers_)
+    observer.OnBrailleDisplayStateChanged(*new_state);
 }
 
 }  // namespace braille_display_private