Make Position::FirstPositionInNode() to take const Node& instead of Node*

third_party/WebKit/Source/core/editing/EditingUtilities.cpp

Index: third_party/WebKit/Source/core/editing/EditingUtilities.cpp
diff --git a/third_party/WebKit/Source/core/editing/EditingUtilities.cpp b/third_party/WebKit/Source/core/editing/EditingUtilities.cpp
index 595aebbcbb9257028cb04d8d3d1972d57fd451ab..b790cb07d2ffab7347cc10d273e40d9575ce020d 100644
--- a/third_party/WebKit/Source/core/editing/EditingUtilities.cpp
+++ b/third_party/WebKit/Source/core/editing/EditingUtilities.cpp
@@ -655,9 +655,9 @@ PositionTemplate<Strategy> FirstEditablePositionAfterPositionInRootAlgorithm(
       << position << ' ' << highest_root;
   // position falls before highestRoot.
   if (position.CompareTo(PositionTemplate<Strategy>::FirstPositionInNode(
-          &highest_root)) == -1 &&
+          highest_root)) == -1 &&
       HasEditableStyle(highest_root))
-    return PositionTemplate<Strategy>::FirstPositionInNode(&highest_root);
+    return PositionTemplate<Strategy>::FirstPositionInNode(highest_root);
 
   PositionTemplate<Strategy> editable_position = position;
 
@@ -1907,7 +1907,7 @@ int IndexForVisiblePosition(const VisiblePosition& visible_position,
   else
     scope = document.documentElement();
 
-  EphemeralRange range(Position::FirstPositionInNode(scope),
+  EphemeralRange range(Position::FirstPositionInNode(*scope),
                        p.ParentAnchoredEquivalent());
 
   return TextIterator::RangeLength(