Update behavior of one-click infobar to remove modal dialog, add "undo".

chrome/browser/ui/cocoa/one_click_signin_bubble_controller.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_ONE_CLICK_SIGNIN_DIALOG_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_ONE_CLICK_SIGNIN_DIALOG_CONTROLLER_H_
 #pragma once
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/callback.h"
 #import "chrome/browser/ui/cocoa/base_bubble_controller.h"
 
 @class BrowserWindowController;
 
 // Displays the one-click signin confirmation bubble (after syncing
 // has started).
 @interface OneClickSigninBubbleController : BaseBubbleController {
  @private
   IBOutlet NSTextField* messageField_;
+  // TODO(akalin): learnMoreLink_ needs to be removed, but it can't until
+  // the nib is changed too.
   IBOutlet NSButton* learnMoreLink_;
   IBOutlet NSButton* advancedLink_;
 
-  base::Closure learnMoreCallback_;
-  base::Closure advancedCallback_;
+  base::Callback<void(bool)> start_sync_callback_;
 }
 
 // Initializes with a browser window controller, under whose wrench
 // menu this bubble will be displayed, and callbacks which are called
 // if the user clicks the corresponding link.
 //
 // The bubble is not automatically displayed; call showWindow:id to
 // display.  The bubble is auto-released on close.
 - (id)initWithBrowserWindowController:(BrowserWindowController*)controller
-                    learnMoreCallback:(const base::Closure&)learnMoreCallback
-                     advancedCallback:(const base::Closure&)advancedCallback;
+    start_sync_callback:(const base::Callback<void(bool)>&)start_sync_callback;
+
+// Starts sync and closes the bubble.
+- (IBAction)ok:(id)sender;
 
 // Just closes the bubble.
-- (IBAction)ok:(id)sender;
-
-// Calls |learnMoreCallback_|.
-- (IBAction)onClickLearnMoreLink:(id)sender;
+// TODO(akalin): The following line should be uncommented once the nib is

[akalin, 2012/05/18 17:57:03]

I think you should just remove this completely, and have the TODO be to hook up
the Undo button to close the dialog. (It might be possible to do that completely
in the .nib)

[Roger Tawa OOO till Jul 10th, 2012/05/23 17:13:02]

Done.

+// also changed.
+// - (IBAction)undo:(id)sender;
 
 // Calls |advancedCallback_|.
 - (IBAction)onClickAdvancedLink:(id)sender;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_ONE_CLICK_SIGNIN_DIALOG_CONTROLLER_H_