ios: Stop using __weak.

ios/chrome/browser/autofill/form_suggestion_controller.mm

 // 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.
 
 #import "ios/chrome/browser/autofill/form_suggestion_controller.h"
 
 #include "base/ios/ios_util.h"
 #include "base/ios/weak_nsobject.h"
 #include "base/mac/foundation_util.h"
 #include "base/mac/scoped_block.h"
@@ skipping 73 matching lines @@
 @end
 
 @implementation FormSuggestionController {
   // Bridge to observe the web state from Objective-C.
   scoped_ptr<web::WebStateObserverBridge> _webStateObserverBridge;
 
   // Manager for FormSuggestion JavaScripts.
   base::scoped_nsobject<JsSuggestionManager> _jsSuggestionManager;
 
   // The provider for the current set of suggestions.
-  __weak id<FormSuggestionProvider> _provider;
+  id<FormSuggestionProvider> _provider;  // weak
 }
 
 - (instancetype)initWithWebState:(web::WebState*)webState
                        providers:(NSArray*)providers
              JsSuggestionManager:(JsSuggestionManager*)jsSuggestionManager {
   self = [super init];
   if (self) {
     _webStateObserverBridge.reset(
         new web::WebStateObserverBridge(webState, self));
     _webViewProxy.reset([webState->GetWebViewProxy() retain]);
@@ skipping 258 matching lines @@
 
 - (void)resizeAccessoryView {
   [self updateKeyboard:_suggestionState.get()];
 }
 
 - (BOOL)getLogKeyboardAccessoryMetrics {
   return YES;
 }
 
 @end