Remove usage of FOR_EACH_OBSERVER macro in ash/common

ash/common/wm/window_state.cc

 // Copyright 2013 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 "ash/common/wm/window_state.h"
 
 #include <utility>
 
 #include "ash/common/wm/default_state.h"
 #include "ash/common/wm/window_positioning_utils.h"
@@ skipping 333 matching lines @@
   ui::WindowShowState new_window_state =
       ToWindowShowState(current_state_->GetType());
   if (new_window_state != GetShowState()) {
     base::AutoReset<bool> resetter(&ignore_property_change_, true);
     window_->SetShowState(new_window_state);
   }
 }
 
 void WindowState::NotifyPreStateTypeChange(
     WindowStateType old_window_state_type) {
-  FOR_EACH_OBSERVER(WindowStateObserver, observer_list_,
-                    OnPreWindowStateTypeChange(this, old_window_state_type));
+  for (auto& observer : observer_list_)
+    observer.OnPreWindowStateTypeChange(this, old_window_state_type);
 }
 
 void WindowState::NotifyPostStateTypeChange(
     WindowStateType old_window_state_type) {
-  FOR_EACH_OBSERVER(WindowStateObserver, observer_list_,
-                    OnPostWindowStateTypeChange(this, old_window_state_type));
+  for (auto& observer : observer_list_)
+    observer.OnPostWindowStateTypeChange(this, old_window_state_type);
 }
 
 void WindowState::SetBoundsDirect(const gfx::Rect& bounds) {
   gfx::Rect actual_new_bounds(bounds);
   // Ensure we don't go smaller than our minimum bounds in "normal" window
   // modes
   if (window_->HasNonClientArea() && !IsMaximized() && !IsFullscreen()) {
     // Get the minimum usable size of the minimum size and the screen size.
     gfx::Size min_size = window_->GetMinimumSize();
     min_size.SetToMin(window_->GetDisplayNearestWindow().work_area().size());
@@ skipping 24 matching lines @@
   if (!window_->GetTargetVisibility()) {
     SetBoundsConstrained(new_bounds);
     return;
   }
 
   window_->SetBoundsDirectCrossFade(new_bounds);
 }
 
 }  // namespace wm
 }  // namespace ash