Update from https://crrev.com/320343

ui/events/platform/platform_event_source.cc

Index: ui/events/platform/platform_event_source.cc
diff --git a/ui/events/platform/platform_event_source.cc b/ui/events/platform/platform_event_source.cc
index 9607ab78232e971d8b4b099829f5395b47722694..bf957f07476f590f917e017280e3a0b8cfcd4880 100644
--- a/ui/events/platform/platform_event_source.cc
+++ b/ui/events/platform/platform_event_source.cc
@@ -51,6 +51,9 @@ scoped_ptr<ScopedEventDispatcher> PlatformEventSource::OverrideDispatcher(
       new ScopedEventDispatcher(&overridden_dispatcher_, dispatcher));
 }
 
+void PlatformEventSource::StopCurrentEventStream() {
+}
+
 void PlatformEventSource::AddPlatformEventObserver(
     PlatformEventObserver* observer) {
   CHECK(observer);
@@ -73,7 +76,7 @@ uint32_t PlatformEventSource::DispatchEvent(PlatformEvent platform_event) {
 
   if ((action & POST_DISPATCH_PERFORM_DEFAULT) &&
       dispatchers_.might_have_observers()) {
-    ObserverList<PlatformEventDispatcher>::Iterator iter(dispatchers_);
+    ObserverList<PlatformEventDispatcher>::Iterator iter(&dispatchers_);
     while (PlatformEventDispatcher* dispatcher = iter.GetNext()) {
       if (dispatcher->CanDispatchEvent(platform_event))
         action = dispatcher->DispatchEvent(platform_event);
@@ -97,9 +100,6 @@ uint32_t PlatformEventSource::DispatchEvent(PlatformEvent platform_event) {
   return action;
 }
 
-void PlatformEventSource::StopCurrentEventStream() {
-}
-
 void PlatformEventSource::OnDispatcherListChanged() {
 }