[content shell] move code common to several processes to a common dir

content/shell/shell_resource_dispatcher_host_delegate.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 "content/shell/shell_resource_dispatcher_host_delegate.h"
 
 #include "base/command_line.h"
+#include "content/shell/common/shell_switches.h"
 #include "content/shell/shell_login_dialog.h"
-#include "content/shell/shell_switches.h"
 
 namespace content {
 
 ShellResourceDispatcherHostDelegate::ShellResourceDispatcherHostDelegate() {
 }
 
 ShellResourceDispatcherHostDelegate::~ShellResourceDispatcherHostDelegate() {
 }
 
 bool ShellResourceDispatcherHostDelegate::AcceptAuthRequest(
@@ skipping 15 matching lines @@
 
 #if !defined(OS_MACOSX) && !defined(TOOLKIT_GTK)
 // TODO: implement ShellLoginDialog for other platforms, drop this #if
   return NULL;
 #else
   return new ShellLoginDialog(auth_info, request);
 #endif
 }
 
 }  // namespace content