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

chrome/browser/ui/gtk/browser_window_gtk.cc

 // 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.
 
 #include "chrome/browser/ui/gtk/browser_window_gtk.h"
 
 #include <dlfcn.h>
 #include <gdk/gdkkeysyms.h>
 
 #include <algorithm>
@@ skipping 1061 matching lines @@
 void BrowserWindowGtk::ShowBookmarkBubble(const GURL& url,
                                           bool already_bookmarked) {
   toolbar_->GetLocationBarView()->ShowStarBubble(url, !already_bookmarked);
 }
 
 void BrowserWindowGtk::ShowChromeToMobileBubble() {
   toolbar_->GetLocationBarView()->ShowChromeToMobileBubble();
 }
 
 #if defined(ENABLE_ONE_CLICK_SIGNIN)
-void BrowserWindowGtk::ShowOneClickSigninBubble() {
+void BrowserWindowGtk::ShowOneClickSigninBubble(
+      const base::Closure& learn_more_callback,
+      const base::Closure& advanced_callback) {
   // TODO(rogerta): will be implemented when the one-click feature is done on
   // linux.
   NOTIMPLEMENTED();
 }
 #endif
 
 bool BrowserWindowGtk::IsDownloadShelfVisible() const {
   return download_shelf_.get() && download_shelf_->IsShowing();
 }
 
@@ skipping 1483 matching lines @@
           wm_type == ui::WM_OPENBOX ||
           wm_type == ui::WM_XFWM4);
 }
 
 // static
 BrowserWindow* BrowserWindow::CreateBrowserWindow(Browser* browser) {
   BrowserWindowGtk* browser_window_gtk = new BrowserWindowGtk(browser);
   browser_window_gtk->Init();
   return browser_window_gtk;
 }