[ObjC ARC] Converts ios/chrome/browser/ui/find_bar:find_bar to ARC.

ios/chrome/browser/ui/find_bar/find_bar_controller_ios.h

 // 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.
 
 #ifndef IOS_CHROME_BROWSER_UI_FIND_BAR_FIND_BAR_CONTROLLER_IOS_H_
 #define IOS_CHROME_BROWSER_UI_FIND_BAR_FIND_BAR_CONTROLLER_IOS_H_
 
 #import <UIKit/UIKit.h>
 
 @class FindInPageModel;
 
 // The a11y ID of the find-in-page bar.
 extern NSString* const kFindInPageContainerViewId;
 
 @interface FindBarControllerIOS : NSObject
 
 // The main view, for both iPhone or iPad.
-@property(nonatomic, readonly) IBOutlet UIView* view;
+@property(strong, nonatomic, readonly) IBOutlet UIView* view;

[sdefresne, 2017/02/03 09:21:30]

nit: I think we put "nonatomic" first, so:

  @property(nonatomic, readonly, strong)

But why "strong" on a "readonly" property?

[stkhapugin, 2017/02/03 12:27:57]

Because we redefine to rewrite in .mm; and besides, this indicates the intent,
i.e. "this class will own this instance". Reordering done. 

 
 // Init with incognito style.
 - (instancetype)initWithIncognito:(BOOL)isIncognito;
 // Current input search term.
 - (NSString*)searchTerm;
 // Update view based on model. If |focusTextfield| is YES, focus the
 // textfield. Updates the results count and, if |initialUpdate| is true, fills
 // the text field with search term from the model.
 - (void)updateView:(FindInPageModel*)model
      initialUpdate:(BOOL)initialUpdate
@@ skipping 19 matching lines @@
 - (IBAction)hideKeyboard:(id)sender;
 // Indicates that Find in Page is shown. When true, |view| is guaranteed not to
 // be nil.
 - (BOOL)isFindInPageShown;
 // Indicates that the Find in Page text field is first responder.
 - (BOOL)isFocused;
 
 @end
 
 #endif  // IOS_CHROME_BROWSER_UI_FIND_BAR_FIND_BAR_CONTROLLER_IOS_H_