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

content/shell/browser/shell_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 "content/shell/browser/shell_message_filter.h"
 
 #include "base/file_util.h"
 #include "base/threading/thread_restrictions.h"
 #include "content/public/browser/child_process_security_policy.h"
 #include "content/shell/browser/shell_browser_context.h"
 #include "content/shell/browser/shell_content_browser_client.h"
 #include "content/shell/browser/shell_network_delegate.h"
 #include "content/shell/common/shell_messages.h"
 #include "net/base/net_errors.h"
 #include "net/cookies/cookie_monster.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "webkit/browser/database/database_tracker.h"
 #include "webkit/browser/fileapi/isolated_context.h"
 #include "webkit/browser/quota/quota_manager.h"
 
 namespace content {
 
 ShellMessageFilter::ShellMessageFilter(
     int render_process_id,
     webkit_database::DatabaseTracker* database_tracker,
     quota::QuotaManager* quota_manager,
     net::URLRequestContextGetter* request_context_getter)
-    : BrowserMessageFilter(ShellMsgStart),
-      render_process_id_(render_process_id),
+    : render_process_id_(render_process_id),
       database_tracker_(database_tracker),
       quota_manager_(quota_manager),
       request_context_getter_(request_context_getter) {
 }
 
 ShellMessageFilter::~ShellMessageFilter() {
 }
 
 void ShellMessageFilter::OverrideThreadForMessage(const IPC::Message& message,
                                                   BrowserThread::ID* thread) {
@@ skipping 56 matching lines @@
   ShellNetworkDelegate::SetAcceptAllCookies(accept);
 }
 
 void ShellMessageFilter::OnDeleteAllCookies() {
   request_context_getter_->GetURLRequestContext()->cookie_store()
       ->GetCookieMonster()
       ->DeleteAllAsync(net::CookieMonster::DeleteCallback());
 }
 
 }  // namespace content