Make GetRootWindow() return a Window instead of a RootWindow.

chrome/browser/printing/print_dialog_cloud.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/printing/print_dialog_cloud.h"
 
 
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 618 matching lines @@
 #if defined(OS_WIN)
   gfx::NativeWindow window =
 #endif
       chrome::ShowWebDialog(modal_parent,
                             Profile::FromBrowserContext(browser_context),
                             dialog_delegate);
 #if defined(OS_WIN)
   if (window) {
     HWND dialog_handle;
 #if defined(USE_AURA)
-    dialog_handle = window->GetRootWindow()->GetAcceleratedWidget();
+    dialog_handle = window->GetDispatcher()->GetAcceleratedWidget();
 #else
     dialog_handle = window;
 #endif
     if (::GetForegroundWindow() != dialog_handle) {
       ui::ForegroundHelper::SetForeground(dialog_handle);
     }
   }
 #endif
 }
 
@@ skipping 128 matching lines @@
           print_job_print_ticket,
           file_type,
           delete_on_close);
       return true;
     }
   }
   return false;
 }
 
 }  // end namespace