Convert ValidationMessageBubbleView to BubbleDialogDelegate

chrome/browser/ui/views/tab_dialogs_views.cc

 // 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.
 
 #include "chrome/browser/ui/views/tab_dialogs_views.h"
 
 #include "base/memory/ptr_util.h"
 #include "chrome/browser/ui/passwords/manage_passwords_bubble_model.h"
 #include "chrome/browser/ui/views/collected_cookies_views.h"
 #include "chrome/browser/ui/views/hung_renderer_view.h"
@@ skipping 56 matching lines @@
 
 void TabDialogsViews::HideManagePasswordsBubble() {
   if (!ManagePasswordsBubbleView::manage_password_bubble())
     return;
   content::WebContents* bubble_web_contents =
       ManagePasswordsBubbleView::manage_password_bubble()->web_contents();
   if (web_contents_ == bubble_web_contents)
     ManagePasswordsBubbleView::CloseCurrentBubble();
 }
 
-std::unique_ptr<ValidationMessageBubble> TabDialogsViews::ShowValidationMessage(
+base::WeakPtr<ValidationMessageBubble> TabDialogsViews::ShowValidationMessage(
     const gfx::Rect& anchor_in_root_view,
     const base::string16& main_text,
     const base::string16& sub_text) {
-  return base::WrapUnique(new ValidationMessageBubbleView(
-      web_contents_, anchor_in_root_view, main_text, sub_text));
+  return (new ValidationMessageBubbleView(
+      web_contents_, anchor_in_root_view, main_text, sub_text))->AsWeakPtr();
 }