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

content/browser/dom_storage/dom_storage_message_filter.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/browser/dom_storage/dom_storage_message_filter.h"
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/strings/nullable_string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "content/browser/dom_storage/dom_storage_area.h"
 #include "content/browser/dom_storage/dom_storage_context_wrapper.h"
 #include "content/browser/dom_storage/dom_storage_host.h"
 #include "content/browser/dom_storage/dom_storage_namespace.h"
 #include "content/browser/dom_storage/dom_storage_task_runner.h"
 #include "content/common/dom_storage/dom_storage_messages.h"
 #include "content/public/browser/user_metrics.h"
 #include "url/gurl.h"
 
 namespace content {
 
 DOMStorageMessageFilter::DOMStorageMessageFilter(
     int render_process_id,
     DOMStorageContextWrapper* context)
-    : BrowserMessageFilter(DOMStorageMsgStart),
-      render_process_id_(render_process_id),
+    : render_process_id_(render_process_id),
       context_(context->context()),
       connection_dispatching_message_for_(0) {
 }
 
 DOMStorageMessageFilter::~DOMStorageMessageFilter() {
   DCHECK(!host_.get());
 }
 
 void DOMStorageMessageFilter::InitializeInSequence() {
   DCHECK(!BrowserThread::CurrentlyOn(BrowserThread::IO));
@@ skipping 180 matching lines @@
     params.connection_id = connection_dispatching_message_for_;
     params.key = key;
     params.new_value = new_value;
     params.old_value = old_value;
     params.namespace_id = alias_namespace_id;
     Send(new DOMStorageMsg_Event(params));
   }
 }
 
 }  // namespace content