[ObjC ARC] Converts ios/chrome/browser/infobars:infobars to ARC.\n\nAutomatically generated ARCMigr…

ios/chrome/browser/infobars/infobar_container_view.mm

 // Copyright 2012 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.
 
 #import "ios/chrome/browser/infobars/infobar_container_view.h"
 
 #include "base/logging.h"
 #include "ios/chrome/browser/infobars/infobar.h"
 #include "ios/public/provider/chrome/browser/ui/infobar_view_protocol.h"
 #include "ui/base/device_form_factor.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 @implementation InfoBarContainerView
 
 - (void)addInfoBar:(InfoBarIOS*)infoBarIOS position:(NSInteger)position {
   DCHECK_LE((NSUInteger)position, [[self subviews] count]);
   CGRect containerBounds = [self bounds];
   infoBarIOS->Layout(containerBounds);
   UIView* view = infoBarIOS->view();
   [self insertSubview:view atIndex:position];
 }
 
@@ skipping 26 matching lines @@
 
 - (CGFloat)topmostVisibleInfoBarHeight {
   for (UIView<InfoBarViewProtocol>* view in
        [self.subviews reverseObjectEnumerator]) {
     return [view sizeThatFits:self.frame.size].height;
   }
   return 0;
 }
 
 @end