ios: Stop using __weak.

ios/chrome/browser/translate/before_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/before_translate_infobar_controller.h"
 
 #import <UIKit/UIKit.h>
 
 #include "base/logging.h"
 #include "base/strings/sys_string_conversions.h"
@@ skipping 13 matching lines @@
 CGFloat kUIPickerHeight = 216;
 CGFloat kUIPickerFontSize = 26;
 NSTimeInterval kPickerAnimationDurationInSeconds = 0.2;
 
 }  // namespace
 
 // The class is a data source and delegate to the UIPickerView that contains the
 // language list.
 @interface LanguagePickerController
     : UIViewController<UIPickerViewDataSource, UIPickerViewDelegate> {
-  __weak translate::TranslateInfoBarDelegate* _translateInfoBarDelegate;
+  translate::TranslateInfoBarDelegate* _translateInfoBarDelegate;  // weak
   NSInteger _initialRow;   // Displayed in bold font.
   NSInteger _disabledRow;  // Grayed out.
 }
 @end
 
 @implementation LanguagePickerController
 
 - (instancetype)initWithDelegate:(translate::TranslateInfoBarDelegate*)
                                      translateInfoBarDelegate
                       initialRow:(NSInteger)initialRow
@@ skipping 55 matching lines @@
 // Action for the language selection "Done" button.
 - (void)languageSelectionDone;
 // Dismisses the language selection view.
 - (void)dismissLanguageSelectionView;
 // Changes the text on the view to match the language.
 - (void)updateInfobarLabelOnView:(UIView<InfoBarViewProtocol>*)view;
 
 @end
 
 @implementation BeforeTranslateInfoBarController {
-  __weak translate::TranslateInfoBarDelegate* _translateInfoBarDelegate;
+  translate::TranslateInfoBarDelegate* _translateInfoBarDelegate;  // weak
   // A fullscreen view that catches all touch events and contains a UIPickerView
   // and a UINavigationBar.
   base::scoped_nsobject<UIView> _languageSelectionView;
   // Stores whether the user is currently choosing in the UIPickerView the
   // original language, or the target language.
   NSUInteger _languageSelectionType;
   // The language picker.
   base::scoped_nsobject<UIPickerView> _languagePicker;
   // Navigation bar associated with the picker with "Done" and "Cancel" buttons.
   base::scoped_nsobject<UINavigationBar> _navigationBar;
@@ skipping 228 matching lines @@
   [super removeView];
   [self dismissLanguageSelectionView];
 }
 
 - (void)detachView {
   [super detachView];
   [self dismissLanguageSelectionView];
 }
 
 @end