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

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

 // Copyright 2015 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/Position.h"
 
 #include "core/editing/EditingTestBase.h"
 
 namespace blink {
 
 class PositionTest : public EditingTestBase {};
 
 TEST_F(PositionTest, IsEquivalent) {
   SetBodyContent("<a id=sample>0<b>1</b>2</a>");
 
   Element* sample = GetDocument().getElementById("sample");
 
   EXPECT_TRUE(Position(sample, 0).IsEquivalent(Position(sample, 0)));
 
   EXPECT_TRUE(
       Position(sample, 0).IsEquivalent(Position::FirstPositionInNode(sample)));
   EXPECT_TRUE(Position(sample, 0).IsEquivalent(
-      Position::BeforeNode(sample->firstChild())));
+      Position::BeforeNode(*sample->firstChild())));
   EXPECT_TRUE(Position(sample, 1).IsEquivalent(
       Position::AfterNode(sample->firstChild())));
   EXPECT_TRUE(Position(sample, 1).IsEquivalent(
-      Position::BeforeNode(sample->firstChild()->nextSibling())));
+      Position::BeforeNode(*sample->firstChild()->nextSibling())));
   EXPECT_TRUE(Position(sample, 2).IsEquivalent(
-      Position::BeforeNode(sample->lastChild())));
+      Position::BeforeNode(*sample->lastChild())));
   EXPECT_TRUE(Position(sample, 3).IsEquivalent(
       Position::AfterNode(sample->lastChild())));
   EXPECT_TRUE(
       Position(sample, 3).IsEquivalent(Position::LastPositionInNode(sample)));
 
   EXPECT_FALSE(Position(sample, 0).IsEquivalent(Position(sample, 1)));
   EXPECT_FALSE(
       Position(sample, 0).IsEquivalent(Position::LastPositionInNode(sample)));
 }
 
 TEST_F(PositionTest, NodeAsRangeLastNodeNull) {
   EXPECT_EQ(nullptr, Position().NodeAsRangeLastNode());
   EXPECT_EQ(nullptr, PositionInFlatTree().NodeAsRangeLastNode());
 }
 
 TEST_F(PositionTest, editingPositionOfWithEditingIgnoresContent) {
   const char* body_content =
       "<textarea id=textarea></textarea><a id=child1>1</a><b id=child2>2</b>";
   SetBodyContent(body_content);
   Node* textarea = GetDocument().getElementById("textarea");
 
-  EXPECT_EQ(Position::BeforeNode(textarea),
+  EXPECT_EQ(Position::BeforeNode(*textarea),
             Position::EditingPositionOf(textarea, 0));
   EXPECT_EQ(Position::AfterNode(textarea),
             Position::EditingPositionOf(textarea, 1));
   EXPECT_EQ(Position::AfterNode(textarea),
             Position::EditingPositionOf(textarea, 2));
 
   // Change DOM tree to
   // <textarea id=textarea><a id=child1>1</a><b id=child2>2</b></textarea>
   Node* child1 = GetDocument().getElementById("child1");
   Node* child2 = GetDocument().getElementById("child2");
   textarea->appendChild(child1);
   textarea->appendChild(child2);
 
-  EXPECT_EQ(Position::BeforeNode(textarea),
+  EXPECT_EQ(Position::BeforeNode(*textarea),
             Position::EditingPositionOf(textarea, 0));
   EXPECT_EQ(Position::AfterNode(textarea),
             Position::EditingPositionOf(textarea, 1));
   EXPECT_EQ(Position::AfterNode(textarea),
             Position::EditingPositionOf(textarea, 2));
   EXPECT_EQ(Position::AfterNode(textarea),
             Position::EditingPositionOf(textarea, 3));
 }
 
 TEST_F(PositionTest, NodeAsRangeLastNode) {
@@ skipping 146 matching lines @@
   const char* shadow_content = "";
   SetBodyContent(body_content);
   ShadowRoot* shadow_root = SetShadowContent(shadow_content, "host");
   Element* host = GetDocument().getElementById("host");
 
   EXPECT_EQ(PositionInFlatTree(host, PositionAnchorType::kAfterChildren),
             ToPositionInFlatTree(Position(shadow_root, 0)));
 }
 
 }  // namespace blink