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"
+#include "chrome/browser/ui/browser_window.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_;
+  BrowserWindow::StartSyncCallback start_sync_callback_;

[akalin, 2012/05/24 18:42:04]

may need this callback to behave like the other platform implementations (null
if already called, etc.).  Add a TODO for me to investigate

[Roger Tawa OOO till Jul 10th, 2012/05/24 19:08:33]

Done.

 }
 
 // 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 BrowserWindow::StartSyncCallback&)
+                          start_sync_callback;
 
-// Just closes the bubble.
+// Starts sync and closes the bubble.
 - (IBAction)ok:(id)sender;
 
-// Calls |learnMoreCallback_|.
-- (IBAction)onClickLearnMoreLink:(id)sender;
-
 // Calls |advancedCallback_|.
 - (IBAction)onClickAdvancedLink:(id)sender;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_ONE_CLICK_SIGNIN_DIALOG_CONTROLLER_H_