Change ChooserController ownership model

chrome/browser/ui/cocoa/extensions/chooser_dialog_cocoa_controller.h

 // Copyright 2016 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 CHROME_BROWSER_UI_COCOA_EXTENSIONS_CHOOSER_DIALOG_COCOA_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_EXTENSIONS_CHOOSER_DIALOG_COCOA_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 
+#include <memory>
+
 #include "base/mac/scoped_nsobject.h"
 
 @class ChooserContentViewCocoa;
 class ChooserController;
 class ChooserDialogCocoa;
 
 // Displays a chooser dialog, and notifies the ChooserController
 // of the selected option.
 @interface ChooserDialogCocoaController
     : NSViewController<NSTableViewDataSource, NSTableViewDelegate> {
   base::scoped_nsobject<ChooserContentViewCocoa> chooserContentView_;
   NSTableView* tableView_;   // Weak.
   NSButton* connectButton_;  // Weak.
   NSButton* cancelButton_;   // Weak.
-  NSButton* helpButton_;     // Weak.
 
   ChooserDialogCocoa* chooserDialogCocoa_;  // Weak.
-  ChooserController* chooserController_;    // Weak.
 }
 
-// Designated initializer.  |chooserDialogCocoa| and |chooserController|
+// Designated initializer. |chooserDialogCocoa| and |chooserController|
 // must both be non-nil.
 - (instancetype)
 initWithChooserDialogCocoa:(ChooserDialogCocoa*)chooserDialogCocoa
-         chooserController:(ChooserController*)chooserController;
-
-// Update |tableView_| when chooser options were initialized.
-- (void)onOptionsInitialized;
-
-// Update |tableView_| when chooser option was added.
-- (void)onOptionAdded:(NSInteger)index;
-
-// Update |tableView_| when chooser option was removed.
-- (void)onOptionRemoved:(NSInteger)index;
-
-// Update |tableView_| when chooser options changed.
-- (void)updateTableView;
+         chooserController:
+             (std::unique_ptr<ChooserController>)chooserController;
 
 // Called when the "Connect" button is pressed.
 - (void)onConnect:(id)sender;
 
 // Called when the "Cancel" button is pressed.
 - (void)onCancel:(id)sender;
 
-// Called when the "Get help" button is pressed.
-- (void)onHelpPressed:(id)sender;
-
 // Gets the |chooserContentView_|. For testing only.
 - (ChooserContentViewCocoa*)chooserContentView;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_EXTENSIONS_CHOOSER_DIALOG_COCOA_CONTROLLER_H_