Put TextIteratorTextNodeHandler and TextIteratorTextState on heap

third_party/WebKit/Source/core/editing/iterators/TextIteratorTextState.cpp

Index: third_party/WebKit/Source/core/editing/iterators/TextIteratorTextState.cpp
diff --git a/third_party/WebKit/Source/core/editing/iterators/TextIteratorTextState.cpp b/third_party/WebKit/Source/core/editing/iterators/TextIteratorTextState.cpp
index d4f9296d8bad7fcb4d1b69be320a362d9346ac36..e6cc3b103b01324e621b9241d2307396364f661e 100644
--- a/third_party/WebKit/Source/core/editing/iterators/TextIteratorTextState.cpp
+++ b/third_party/WebKit/Source/core/editing/iterators/TextIteratorTextState.cpp
@@ -36,6 +36,11 @@ TextIteratorTextState::TextIteratorTextState(
     const TextIteratorBehavior& behavior)
     : behavior_(behavior) {}
 
+DEFINE_TRACE(TextIteratorTextState) {
+  visitor->Trace(position_node_);
+  visitor->Trace(position_offset_base_node_);
+}
+
 UChar TextIteratorTextState::CharacterAt(unsigned index) const {
   SECURITY_DCHECK(index < static_cast<unsigned>(length()));
   if (!(index < static_cast<unsigned>(length())))