[Sync] [Mac] Implement one-click signin bubble for OS X

chrome/browser/ui/browser_window.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_BROWSER_WINDOW_H_
 #define CHROME_BROWSER_UI_BROWSER_WINDOW_H_
 #pragma once
 
+#include "base/callback_forward.h"
 #include "chrome/browser/ui/base_window.h"
 #include "chrome/browser/ui/bookmarks/bookmark_bar.h"
 #include "chrome/browser/ui/fullscreen_exit_bubble_type.h"
 #include "chrome/common/content_settings_types.h"
 #include "ui/gfx/native_widget_types.h"
 #include "webkit/glue/window_open_disposition.h"
 
 class Browser;
 class BrowserWindowTesting;
 class DownloadShelf;
@@ skipping 191 matching lines @@
   virtual void ShowBackgroundPages() = 0;
 
   // Shows the Bookmark bubble. |url| is the URL being bookmarked,
   // |already_bookmarked| is true if the url is already bookmarked.
   virtual void ShowBookmarkBubble(const GURL& url, bool already_bookmarked) = 0;
 
   // Shows the Chrome To Mobile bubble.
   virtual void ShowChromeToMobileBubble() = 0;
 
 #if defined(ENABLE_ONE_CLICK_SIGNIN)
-  // Shows the one-click sign in bubble.
-  virtual void ShowOneClickSigninBubble() = 0;
+  // Shows the one-click sign in bubble.  The given closures are run
+  // when their corresponding links are clicked.
+  virtual void ShowOneClickSigninBubble(
+      const base::Closure& learn_more_callback,
+      const base::Closure& advanced_callback) = 0;
 #endif
 
   // Whether or not the shelf view is visible.
   virtual bool IsDownloadShelfVisible() const = 0;
 
   // Returns the DownloadShelf.
   virtual DownloadShelf* GetDownloadShelf() = 0;
 
   // Shows the confirmation dialog box warning that the browser is closing with
   // in-progress downloads.
@@ skipping 160 matching lines @@
 
   // Returns the ToolbarView.
   virtual ToolbarView* GetToolbarView() const = 0;
 #endif
 
  protected:
   virtual ~BrowserWindowTesting() {}
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_WINDOW_H_