Get rid of a redundant function alias lastPositionInNode()

third_party/WebKit/Source/core/editing/Position.h

Index: third_party/WebKit/Source/core/editing/Position.h
diff --git a/third_party/WebKit/Source/core/editing/Position.h b/third_party/WebKit/Source/core/editing/Position.h
index 36b043d240894940f985ba1da866fa4b75588981..e0f3cbfb5afde9db847e62f217753fcd84281d3b 100644
--- a/third_party/WebKit/Source/core/editing/Position.h
+++ b/third_party/WebKit/Source/core/editing/Position.h
@@ -284,7 +284,6 @@ int PositionTemplate<Strategy>::lastOffsetInNode(Node* node)
     return node->offsetInCharacters() ? node->maxCharacterOffset() : static_cast<int>(Strategy::countChildren(*node));
 }
 
-// firstPositionInNode and lastPositionInNode return parent-anchored positions, lastPositionInNode construction is O(n) due to countChildren()
 template <typename Strategy>
 PositionTemplate<Strategy> PositionTemplate<Strategy>::firstPositionInNode(Node* anchorNode)
 {
@@ -301,11 +300,6 @@ PositionTemplate<Strategy> PositionTemplate<Strategy>::lastPositionInNode(Node*
     return PositionTemplate<Strategy>(anchorNode, PositionAnchorType::AfterChildren);
 }
 
-inline Position lastPositionInNode(Node* anchorNode)
-{
-    return Position::lastPositionInNode(anchorNode);
-}
-
 template <typename Strategy>
 int PositionTemplate<Strategy>::minOffsetForNode(Node* anchorNode, int offset)
 {