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

content/browser/resolve_proxy_msg_helper.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/resolve_proxy_msg_helper.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/compiler_specific.h"
 #include "content/common/view_messages.h"
 #include "net/base/net_errors.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter.h"
 
 namespace content {
 
 ResolveProxyMsgHelper::ResolveProxyMsgHelper(
     net::URLRequestContextGetter* getter)
-    : BrowserMessageFilter(ViewMsgStart),
-      context_getter_(getter),
+    : context_getter_(getter),
       proxy_service_(NULL) {
 }
 
 ResolveProxyMsgHelper::ResolveProxyMsgHelper(net::ProxyService* proxy_service)
-    : BrowserMessageFilter(ViewMsgStart),
-      proxy_service_(proxy_service) {
+    : proxy_service_(proxy_service) {
 }
 
 bool ResolveProxyMsgHelper::OnMessageReceived(const IPC::Message& message,
                                               bool* message_was_ok) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP_EX(ResolveProxyMsgHelper, message, *message_was_ok)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(ViewHostMsg_ResolveProxy, OnResolveProxy)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
@@ skipping 59 matching lines @@
       base::Bind(&ResolveProxyMsgHelper::OnResolveProxyCompleted,
                  base::Unretained(this)),
       &req.pac_req, net::BoundNetLog());
 
   // Completed synchronously.
   if (result != net::ERR_IO_PENDING)
     OnResolveProxyCompleted(result);
 }
 
 }  // namespace content