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

ios/chrome/browser/autofill/form_suggestion_controller.h

 // Copyright 2014 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_AUTOFILL_FORM_SUGGESTION_CONTROLLER_H_
 #define IOS_CHROME_BROWSER_AUTOFILL_FORM_SUGGESTION_CONTROLLER_H_
 
 #import <UIKit/UIKit.h>
 
 #include <string>
@@ skipping 28 matching lines @@
 // form, requests them, and updates the view accordingly.
 - (void)retrieveSuggestionsForFormNamed:(const std::string&)formName
                               fieldName:(const std::string&)fieldName
                                    type:(const std::string&)type
                                webState:(web::WebState*)webState;
 
 // Instructs the controller to detach itself from the WebState.
 - (void)detachFromWebState;
 
 // Provides an input accessory view for form suggestions.
-@property(nonatomic, readonly)
-    id<FormInputAccessoryViewProvider> accessoryViewProvider;
+@property(nonatomic, readonly) id<FormInputAccessoryViewProvider>
+    accessoryViewProvider;
 
 @end
 
 @interface FormSuggestionController (ForTesting)
 
 // Initializes a new controller in the same way as the public initializer, but
 // supports specifying a JsSuggestionManager for testing.
 - (instancetype)initWithWebState:(web::WebState*)webState
                        providers:(NSArray*)providers
              JsSuggestionManager:(JsSuggestionManager*)jsSuggestionManager;
 
 // Overrides the web view proxy.
 - (void)setWebViewProxy:(id<CRWWebViewProxy>)webViewProxy;
 
 // Invoked when an attempt to retrieve suggestions yields no results.
 - (void)onNoSuggestionsAvailable;
 
 @end
 
 #endif  // IOS_CHROME_BROWSER_AUTOFILL_FORM_SUGGESTION_CONTROLLER_H_