ios: Stop using __weak.

ios/chrome/browser/translate/after_translate_infobar_controller.mm

 // 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 "ios/chrome/browser/translate/after_translate_infobar_controller.h"
 
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/translate/core/browser/translate_infobar_delegate.h"
 #include "grit/components_strings.h"
 #include "ios/chrome/browser/translate/translate_infobar_tags.h"
 #include "ios/public/provider/chrome/browser/chrome_browser_provider.h"
 #include "ios/public/provider/chrome/browser/string_provider.h"
 #import "ios/public/provider/chrome/browser/ui/infobar_view_delegate.h"
 #import "ios/public/provider/chrome/browser/ui/infobar_view_protocol.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/image/image.h"
 
 @interface AfterTranslateInfoBarController () {
-  __weak translate::TranslateInfoBarDelegate* _translateInfoBarDelegate;
+  translate::TranslateInfoBarDelegate* _translateInfoBarDelegate;  // weak
 }
 
 // Action for any of the user defined buttons.
 - (void)infoBarButtonDidPress:(id)sender;
 
 @end
 
 @implementation AfterTranslateInfoBarController
 
 #pragma mark -
@@ skipping 86 matching lines @@
 }
 
 - (void)infoBarSwitchDidPress:(id)sender {
   DCHECK_EQ(TranslateInfoBarIOSTag::ALWAYS_TRANSLATE_SWITCH, [sender tag]);
   DCHECK([sender respondsToSelector:@selector(isOn)]);
   if (_translateInfoBarDelegate->ShouldAlwaysTranslate() != [sender isOn])
     _translateInfoBarDelegate->ToggleAlwaysTranslate();
 }
 
 @end