Convert //ios from scoped_ptr to std::unique_ptr.

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 <memory>
+
 #include "base/ios/ios_util.h"
 #include "base/ios/weak_nsobject.h"
 #include "base/mac/foundation_util.h"
 #include "base/mac/scoped_block.h"
 #include "base/mac/scoped_nsobject.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/autofill/core/browser/autofill_field_trial_ios.h"
 #include "components/autofill/core/browser/autofill_popup_delegate.h"
 #import "components/autofill/ios/browser/form_suggestion.h"
 #import "ios/chrome/browser/autofill/form_input_accessory_view_controller.h"
 #import "ios/chrome/browser/autofill/form_suggestion_provider.h"
 #import "ios/chrome/browser/autofill/form_suggestion_view.h"
 #import "ios/chrome/browser/passwords/password_generation_utils.h"
 #include "ios/chrome/browser/ui/ui_util.h"
@@ skipping 29 matching lines @@
 
 @interface FormSuggestionController () <FormInputAccessoryViewProvider> {
   // Form navigation delegate.
   base::WeakNSProtocol<id<FormInputAccessoryViewDelegate>> _delegate;
 
   // Callback to update the accessory view.
   base::mac::ScopedBlock<AccessoryViewReadyCompletion>
       accessoryViewUpdateBlock_;
 
   // Autofill suggestion state.
-  scoped_ptr<AutofillSuggestionState> _suggestionState;
+  std::unique_ptr<AutofillSuggestionState> _suggestionState;
 
   // Providers for suggestions, sorted according to the order in which
   // they should be asked for suggestions, with highest priority in front.
   base::scoped_nsobject<NSArray> _suggestionProviders;
 
   // Access to WebView from the CRWWebController.
   base::scoped_nsprotocol<id<CRWWebViewProxy>> _webViewProxy;
 }
 
 // Returns an autoreleased input accessory view that shows |suggestions|.
 - (UIView*)suggestionViewWithSuggestions:(NSArray*)suggestions;
 
 // Updates keyboard for |suggestionState|.
 - (void)updateKeyboard:(AutofillSuggestionState*)suggestionState;
 
 // Updates keyboard with |suggestions|.
 - (void)updateKeyboardWithSuggestions:(NSArray*)suggestions;
 
 // Clears state in between page loads.
 - (void)resetSuggestionState;
 
 @end
 
 @implementation FormSuggestionController {
   // Bridge to observe the web state from Objective-C.
-  scoped_ptr<web::WebStateObserverBridge> _webStateObserverBridge;
+  std::unique_ptr<web::WebStateObserverBridge> _webStateObserverBridge;
 
   // Manager for FormSuggestion JavaScripts.
   base::scoped_nsobject<JsSuggestionManager> _jsSuggestionManager;
 
   // The provider for the current set of suggestions.
   id<FormSuggestionProvider> _provider;  // weak
 }
 
 - (instancetype)initWithWebState:(web::WebState*)webState
                        providers:(NSArray*)providers
@@ skipping 264 matching lines @@
 
 - (void)resizeAccessoryView {
   [self updateKeyboard:_suggestionState.get()];
 }
 
 - (BOOL)getLogKeyboardAccessoryMetrics {
   return YES;
 }
 
 @end