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

chrome/browser/multi_process_notification_linux.cc

Index: chrome/browser/multi_process_notification_linux.cc
diff --git a/chrome/browser/multi_process_notification_linux.cc b/chrome/browser/multi_process_notification_linux.cc
index 6d1fb12db652d861aeab873f4b7efe2a6e98f241..bb36c886233811d4e218744d167c6afcab09f1ea 100644
--- a/chrome/browser/multi_process_notification_linux.cc
+++ b/chrome/browser/multi_process_notification_linux.cc
@@ -20,7 +20,7 @@ class ListenerImpl {
                Domain domain,
                Listener::Delegate* delegate);
 
-  bool Start();
+  bool Start(MessageLoopForIO* loop_to_listen_on);
 
  private:
   std::string name_;
@@ -36,7 +36,7 @@ ListenerImpl::ListenerImpl(const std::string& name,
     : name_(name), domain_(domain), delegate_(delegate) {
 }
 
-bool ListenerImpl::Start() {
+bool ListenerImpl::Start(MessageLoop* io_loop_to_listen_on) {
   // TODO(dmaclach): Implement
   NOTIMPLEMENTED();
   return false;
@@ -51,8 +51,8 @@ Listener::Listener(const std::string& name,
 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