Reduce FOR_EACH_OBSERVER usage in ui/

ui/base/win/osk_display_manager.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/base/win/osk_display_manager.h"
 
 #include <windows.h>
 #include <shellapi.h>
 #include <shlobj.h>
 #include <shobjidl.h>  // Must be before propkey.
@@ skipping 201 matching lines @@
         FROM_HERE, base::Bind(&OnScreenKeyboardDetector::HideIfNecessary,
                               keyboard_detector_factory_.GetWeakPtr()),
         base::TimeDelta::FromMilliseconds(kCheckOSKDelayMs));
   }
 }
 
 void OnScreenKeyboardDetector::HandleKeyboardVisible() {
   DCHECK(!osk_visible_notification_received_);
   osk_visible_notification_received_ = true;
 
-  FOR_EACH_OBSERVER(OnScreenKeyboardObserver, observers_,
-                    OnKeyboardVisible(osk_rect_pixels_));
+  for (OnScreenKeyboardObserver& observer : observers_)
+    observer.OnKeyboardVisible(osk_rect_pixels_);
 
   // Now that the keyboard is visible, run the task to detect if it was hidden.
   base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
       FROM_HERE, base::Bind(&OnScreenKeyboardDetector::HideIfNecessary,
                             keyboard_detector_factory_.GetWeakPtr()),
       base::TimeDelta::FromMilliseconds(kCheckOSKDelayMs));
 }
 
 void OnScreenKeyboardDetector::HandleKeyboardHidden() {
   osk_visible_notification_received_ = false;
-  FOR_EACH_OBSERVER(OnScreenKeyboardObserver, observers_,
-                    OnKeyboardHidden(osk_rect_pixels_));
+  for (OnScreenKeyboardObserver& observer : observers_)
+    observer.OnKeyboardHidden(osk_rect_pixels_);
   ClearObservers();
 }
 
 void OnScreenKeyboardDetector::ClearObservers() {
   for (auto& observer : observers_)
     RemoveObserver(&observer);
 }
 
 // OnScreenKeyboardDisplayManager member definitions.
 OnScreenKeyboardDisplayManager::OnScreenKeyboardDisplayManager() {}
@@ skipping 108 matching lines @@
         return false;
       }
       common_program_files_path = common_program_files;
     }
     osk_path->insert(common_program_files_offset, common_program_files_path);
   }
   return !osk_path->empty();
 }
 
 }  // namespace ui