Revert "Allow MessageFilters to restrict listening to specific message classes"

components/nacl/browser/nacl_host_message_filter.cc

 // Copyright 2013 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 "components/nacl/browser/nacl_host_message_filter.h"
 
 #include "base/sys_info.h"
 #include "components/nacl/browser/nacl_browser.h"
 #include "components/nacl/browser/nacl_file_host.h"
 #include "components/nacl/browser/nacl_process_host.h"
 #include "components/nacl/browser/pnacl_host.h"
 #include "components/nacl/common/nacl_host_messages.h"
 #include "ipc/ipc_platform_file.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "url/gurl.h"
 
 namespace nacl {
 
 NaClHostMessageFilter::NaClHostMessageFilter(
     int render_process_id,
     bool is_off_the_record,
     const base::FilePath& profile_directory,
     net::URLRequestContextGetter* request_context)
-    : BrowserMessageFilter(NaClHostMsgStart),
-      render_process_id_(render_process_id),
+    : render_process_id_(render_process_id),
       off_the_record_(is_off_the_record),
       profile_directory_(profile_directory),
       request_context_(request_context),
       weak_ptr_factory_(this) {
 }
 
 NaClHostMessageFilter::~NaClHostMessageFilter() {
 }
 
 void NaClHostMessageFilter::OnChannelClosing() {
@@ skipping 139 matching lines @@
 
 void NaClHostMessageFilter::OnOpenNaClExecutable(int render_view_id,
                                                  const GURL& file_url,
                                                  IPC::Message* reply_msg) {
   nacl_file_host::OpenNaClExecutable(this, render_view_id, file_url,
                                      reply_msg);
 }
 #endif
 
 }  // namespace nacl