Convert ValidationMessageBubbleView to BubbleDialogDelegate

chrome/browser/ui/cocoa/validation_message_bubble_cocoa.h

 // Copyright 2015 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_VALIDATION_MESSAGE_BUBBLE_COCOA_H_
 #define CHROME_BROWSER_UI_COCOA_VALIDATION_MESSAGE_BUBBLE_COCOA_H_
 
 #include "base/mac/scoped_nsobject.h"
 #include "base/macros.h"
+#include "base/memory/weak_ptr.h"
 #include "chrome/browser/ui/validation_message_bubble.h"
 
 @class ValidationMessageBubbleController;
 
 namespace content {
 class WebContents;
 }
 
-class ValidationMessageBubbleCocoa : public ValidationMessageBubble {
+class ValidationMessageBubbleCocoa
+    : public ValidationMessageBubble,
+      public base::SupportsWeakPtr<ValidationMessageBubbleCocoa> {
  public:
   ValidationMessageBubbleCocoa(content::WebContents* web_contents,
                                const gfx::Rect& anchor_in_root_view,
                                const base::string16& main_text,
                                const base::string16& sub_text);
   ~ValidationMessageBubbleCocoa() override;
 
   // ValidationMessageBubble overrides:
   void SetPositionRelativeToAnchor(
       content::RenderWidgetHost* widget_host,
       const gfx::Rect& anchor_in_root_view) override;
+  void CloseValidationMessage() override;
 
  private:
   base::scoped_nsobject<ValidationMessageBubbleController> controller_;
 
   DISALLOW_COPY_AND_ASSIGN(ValidationMessageBubbleCocoa);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_VALIDATION_MESSAGE_BUBBLE_COCOA_H_