Migrate WTF::HashMap::remove() to ::erase()

third_party/WebKit/Source/core/dom/ChildListMutationScope.cpp

Index: third_party/WebKit/Source/core/dom/ChildListMutationScope.cpp
diff --git a/third_party/WebKit/Source/core/dom/ChildListMutationScope.cpp b/third_party/WebKit/Source/core/dom/ChildListMutationScope.cpp
index 06597ed6990e0c7f5839bb5dd12cf0ceb7278d87..f6742602861d37388701ce809419196b6fa3bcbc 100644
--- a/third_party/WebKit/Source/core/dom/ChildListMutationScope.cpp
+++ b/third_party/WebKit/Source/core/dom/ChildListMutationScope.cpp
@@ -63,7 +63,7 @@ void ChildListMutationAccumulator::leaveMutationScope() {
   if (!--m_mutationScopes) {
     if (!isEmpty())
       enqueueMutationRecord();
-    accumulatorMap().remove(m_target.get());
+    accumulatorMap().erase(m_target.get());
   }
 }