Change ShowConfirmBubble() to take model by scoped_ptr.

chrome/browser/ui/cocoa/confirm_bubble_cocoa.mm

 // Copyright (c) 2012 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 "chrome/browser/ui/cocoa/confirm_bubble_cocoa.h"
 
 #include "base/strings/string16.h"
 #include "chrome/browser/themes/theme_service.h"
 #import "chrome/browser/ui/cocoa/confirm_bubble_controller.h"
 #include "chrome/browser/ui/confirm_bubble.h"
@@ skipping 29 matching lines @@
 
 // Horizontal spacing between the edge of the window and the
 // left or right of a button.
 const int kButtonHEdgeMargin = 7;
 
 namespace chrome {
 
 void ShowConfirmBubble(gfx::NativeWindow window,
                        gfx::NativeView anchor_view,
                        const gfx::Point& origin,
-                       ConfirmBubbleModel* model) {
+                       scoped_ptr<ConfirmBubbleModel> model) {
   // Create a custom NSViewController that manages a bubble view, and add it to
   // a child to the specified |anchor_view|. This controller will be
   // automatically deleted when it loses first-responder status.
   ConfirmBubbleController* controller =
       [[ConfirmBubbleController alloc] initWithParent:anchor_view
                                                origin:origin.ToCGPoint()
-                                                model:model];
+                                                model:model.Pass()];
   [anchor_view addSubview:[controller view]
                positioned:NSWindowAbove
                relativeTo:nil];
   [[anchor_view window] makeFirstResponder:[controller view]];
 }
 
 }  // namespace chrome
 
 // An interface that is derived from NSTextView and does not accept
 // first-responder status, i.e. a NSTextView-derived class that never becomes
@@ skipping 220 matching lines @@
 
 - (void)clickCancel {
   [self cancel:self];
 }
 
 - (void)clickLink {
   [self textView:messageLabel_.get() clickedOnLink:nil atIndex:0];
 }
 
 @end