ozone: Remove the explicit call to start listening for events.

ui/ozone/platform/caca/caca_event_factory.cc

Index: ui/ozone/platform/caca/caca_event_factory.cc
diff --git a/ui/ozone/platform/caca/caca_event_factory.cc b/ui/ozone/platform/caca/caca_event_factory.cc
index dd8bfc25610001c24d67033bf242314050efacf4..c17e5a4f9657b0138b1a1267e65bda609246c413 100644
--- a/ui/ozone/platform/caca/caca_event_factory.cc
+++ b/ui/ozone/platform/caca/caca_event_factory.cc
@@ -146,15 +146,15 @@ CacaEventFactory::CacaEventFactory(CacaConnection* connection)
 CacaEventFactory::~CacaEventFactory() {
 }
 
-void CacaEventFactory::StartProcessingEvents() {
-  ScheduleEventProcessing();
-}
-
 void CacaEventFactory::WarpCursorTo(gfx::AcceleratedWidget widget,
                                     const gfx::PointF& location) {
   NOTIMPLEMENTED();
 }
 
+void CacaEventFactory::OnDispatcherListChanged() {
+  ScheduleEventProcessing();
+}
+
 void CacaEventFactory::ScheduleEventProcessing() {
   // Caca uses a poll based event retrieval. Since we don't want to block we'd
   // either need to spin up a new thread or just poll. For simplicity just poll