Make VisiblePosition::BeforeNode() to take const Node& instead of Node*

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

Index: third_party/WebKit/Source/core/editing/iterators/TextIterator.cpp
diff --git a/third_party/WebKit/Source/core/editing/iterators/TextIterator.cpp b/third_party/WebKit/Source/core/editing/iterators/TextIterator.cpp
index 65ac5ee573bc2d74d39a2710ec3428c0eddca4a2..3bfb044db9fa71bc3ee6ee8fa8ea6d6d6eea3c65 100644
--- a/third_party/WebKit/Source/core/editing/iterators/TextIterator.cpp
+++ b/third_party/WebKit/Source/core/editing/iterators/TextIterator.cpp
@@ -737,7 +737,7 @@ bool TextIteratorAlgorithm<Strategy>::ShouldRepresentNodeOffsetZero() {
   // for them either.
   VisiblePosition start_pos =
       CreateVisiblePosition(Position(start_container_, start_offset_));
-  VisiblePosition curr_pos = VisiblePosition::BeforeNode(node_);
+  VisiblePosition curr_pos = VisiblePosition::BeforeNode(*node_);
   return start_pos.IsNotNull() && curr_pos.IsNotNull() &&
          !InSameLine(start_pos, curr_pos);
 }