Remove base::ObserverList<T>::Iter::GetNext().

base/observer_list.h

Index: base/observer_list.h
diff --git a/base/observer_list.h b/base/observer_list.h
index 7543a98180995fba09e4905e78ad1fab275d8d10..8f0be2d639bafc585efd0932cafbd21e42252850 100644
--- a/base/observer_list.h
+++ b/base/observer_list.h
@@ -92,9 +92,6 @@ class ObserverListBase
     explicit Iter(ContainerType* list);
     ~Iter();
 
-    // Deprecated.
-    ObserverType* GetNext();
-
     // A workaround for C2244. MSVC requires fully qualified type name for
     // return type on a function definition to match a function declaration.
     using ThisType =
@@ -273,15 +270,6 @@ void ObserverListBase<ObserverType>::Iter<ContainerType>::EnsureValidIndex() {
 }
 
 template <class ObserverType>
-template <class ContainerType>
-ObserverType* ObserverListBase<ObserverType>::Iter<ContainerType>::GetNext() {
-  EnsureValidIndex();
-  ObserverType* current = GetCurrent();
-  operator++();
-  return current;
-}
-
-template <class ObserverType>
 void ObserverListBase<ObserverType>::AddObserver(ObserverType* obs) {
   DCHECK(obs);
   if (ContainsValue(observers_, obs)) {