Implement the new Sync Confirmation dialog on Linux and Windows.

chrome/browser/ui/cocoa/browser_window_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.
 
 #include "chrome/browser/ui/cocoa/browser_window_cocoa.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #import "base/mac/sdk_forward_declarations.h"
@@ skipping 835 matching lines @@
   if ([anchor isHiddenOrHasHiddenAncestor])
     anchor = [[controller_ toolbarController] wrenchButton];
   [controller showAvatarBubbleAnchoredAt:anchor
                                 withMode:mode
                          withServiceType:manage_accounts_params.service_type];
 }
 
 void BrowserWindowCocoa::ShowModalSigninWindow(AvatarBubbleMode mode) {
   NOTREACHED();
 }
+
 void BrowserWindowCocoa::CloseModalSigninWindow() {
   NOTREACHED();
 }
 
+void BrowserWindowCocoa::ShowModalSyncConfirmationWindow() {
+  NOTREACHED();
+}
+
 int
 BrowserWindowCocoa::GetRenderViewHeightInsetWithDetachedBookmarkBar() {
   if (browser_->bookmark_bar_state() != BookmarkBar::DETACHED)
     return 0;
   return 40;
 }
 
 void BrowserWindowCocoa::ExecuteExtensionCommand(
     const extensions::Extension* extension,
     const extensions::Command& command) {
@@ skipping 15 matching lines @@
 void BrowserWindowCocoa::UnhideDownloadShelf() {
   GetDownloadShelf()->Unhide();
 }
 
 void BrowserWindowCocoa::HideDownloadShelf() {
   GetDownloadShelf()->Hide();
   StatusBubble* statusBubble = GetStatusBubble();
   if (statusBubble)
     statusBubble->Hide();
 }