Add IPC plumbing code for Quota API

content/common/quota_dispatcher_dummy.cc

+// Copyright (c) 2011 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/common/quota_dispatcher.h"
+
+#include "base/compiler_specific.h"
+
+// QuotaDispatcher -------------------------------------------------------------
+
+QuotaDispatcher::QuotaDispatcher() {
+}
+
+QuotaDispatcher::~QuotaDispatcher() {
+}
+
+// QuotaDispatcher implementation ----------------------------------------------
+
+bool QuotaDispatcher::OnMessageReceived(const IPC::Message& message) {
+  return false;
+}