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

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/editing/FrameSelection.h"
 
 #include <memory>
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
@@ skipping 353 matching lines @@
 // Regression test for crbug.com/702756
 // Test case excerpted from editing/undo/redo_correct_selection.html
 TEST_F(FrameSelectionTest, SelectInvalidPositionInFlatTreeDoesntCrash) {
   SetBodyContent("foo<option><select></select></option>");
   Element* body = GetDocument().body();
   Element* select = GetDocument().QuerySelector("select");
   Node* foo = body->firstChild();
   Selection().SetSelection(SelectionInDOMTree::Builder()
                                .Collapse(Position(body, 0))
                                // SELECT@AfterAnchor is invalid in flat tree.
-                               .Extend(Position::AfterNode(select))
+                               .Extend(Position::AfterNode(*select))
                                .Build());
   // Should not crash inside.
   const VisibleSelectionInFlatTree& selection =
       Selection().ComputeVisibleSelectionInFlatTree();
 
   // This only records the current behavior. It might be changed in the future.
   EXPECT_EQ(PositionInFlatTree(foo, 0), selection.Base());
   EXPECT_EQ(PositionInFlatTree(foo, 0), selection.Extent());
 }
 
@@ skipping 582 matching lines @@
 TEST_F(FrameSelectionTest, InconsistentVisibleSelectionNoCrash) {
   SetBodyContent("foo<div id=host><span id=anchor>bar</span></div>baz");
   SetShadowContent("shadow", "host");
 
   Element* anchor = GetDocument().getElementById("anchor");
 
   // |start| and |end| are valid Positions in DOM tree, but do not participate
   // in flat tree. They should be canonicalized to null VisiblePositions, but
   // are currently not. See crbug.com/729636 for details.
   const Position& start = Position::BeforeNode(*anchor);
-  const Position& end = Position::AfterNode(anchor);
+  const Position& end = Position::AfterNode(*anchor);
   Selection().SetSelection(
       SelectionInDOMTree::Builder().Collapse(start).Extend(end).Build());
 
   // Shouldn't crash inside.
   EXPECT_FALSE(Selection().SelectionHasFocus());
 }
 
 }  // namespace blink