ios: Stop using __weak.

components/autofill/ios/browser/form_suggestion.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.
 
 #import "components/autofill/ios/browser/form_suggestion.h"
 
 @interface FormSuggestion ()
-// TODO(rohitrao): These properties must be redefined readwrite to work around a
-// clang bug.  crbug.com/228650
-@property(copy, readwrite) NSString* value;
-@property(copy, readwrite) NSString* icon;
-
 // Local initializer for a FormSuggestion.
 - (id)initWithValue:(NSString*)value
     displayDescription:(NSString*)displayDescription
                   icon:(NSString*)icon
             identifier:(NSInteger)identifier;
-
 @end
 
 @implementation FormSuggestion {
   NSString* _value;
   NSString* _displayDescription;
   NSString* _icon;
   NSInteger _identifier;
   base::mac::ObjCPropertyReleaser _propertyReleaser_FormSuggestion;
 }
 
@@ skipping 21 matching lines @@
                     displayDescription:(NSString*)displayDescription
                                   icon:(NSString*)icon
                             identifier:(NSInteger)identifier {
   return [[[FormSuggestion alloc] initWithValue:value
                              displayDescription:displayDescription
                                            icon:icon
                                      identifier:identifier] autorelease];
 }
 
 @end