Remove FOR_EACH_OBSERVER macro usage in chrome/browser/ui

chrome/browser/ui/webui/chromeos/touch_view_controller_delegate.cc

Index: chrome/browser/ui/webui/chromeos/touch_view_controller_delegate.cc
diff --git a/chrome/browser/ui/webui/chromeos/touch_view_controller_delegate.cc b/chrome/browser/ui/webui/chromeos/touch_view_controller_delegate.cc
index df571f2759ab9cbc323cbe4b58df2cb4bfc53efb..f16aa1ae2151b4283823eaae1b7ee70cfced5352 100644
--- a/chrome/browser/ui/webui/chromeos/touch_view_controller_delegate.cc
+++ b/chrome/browser/ui/webui/chromeos/touch_view_controller_delegate.cc
@@ -32,11 +32,13 @@ bool TouchViewControllerDelegate::IsMaximizeModeEnabled() const {
 }
 
 void TouchViewControllerDelegate::OnMaximizeModeStarted() {
-  FOR_EACH_OBSERVER(Observer, observers_, OnMaximizeModeStarted());
+  for (Observer& observer : observers_)
+    observer.OnMaximizeModeStarted();
 }
 
 void TouchViewControllerDelegate::OnMaximizeModeEnded() {
-  FOR_EACH_OBSERVER(Observer, observers_, OnMaximizeModeEnded());
+  for (Observer& observer : observers_)
+    observer.OnMaximizeModeEnded();
 }
 
 }  // namespace chromeos