Fix up notifications so that they aren't only on Browser IOThread.

chrome/browser/multi_process_notification_linux.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 "chrome/browser/multi_process_notification.h"
 
 #include "base/logging.h"
 
 namespace multi_process_notification {
 
 bool Post(const std::string& name, Domain domain) {
   // TODO(dmaclach): Implement
   NOTIMPLEMENTED();
   return false;
 }
 
 class ListenerImpl {
  public:
   ListenerImpl(const std::string& name,
                Domain domain,
                Listener::Delegate* delegate);
 
-  bool Start();
+  bool Start(MessageLoopForIO* loop_to_listen_on);
 
  private:
   std::string name_;
   Domain domain_;
   Listener::Delegate* delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(ListenerImpl);
 };
 
 ListenerImpl::ListenerImpl(const std::string& name,
                            Domain domain,
                            Listener::Delegate* delegate)
     : name_(name), domain_(domain), delegate_(delegate) {
 }
 
-bool ListenerImpl::Start() {
+bool ListenerImpl::Start(MessageLoop* io_loop_to_listen_on) {
   // TODO(dmaclach): Implement
   NOTIMPLEMENTED();
   return false;
 }
 
 Listener::Listener(const std::string& name,
                    Domain domain,
                    Listener::Delegate* delegate)
     : impl_(new ListenerImpl(name, domain, delegate)) {
 }
 
 Listener::~Listener() {
 }
 
-bool Listener::Start() {
-  return impl_->Start();
+bool Listener::Start(MessageLoop* io_loop_to_listen_on) {
+  return impl_->Start(io_loop_to_listen_on);
 }
 
 }  // namespace multi_process_notification