Remove redundant casts, use NGLayoutInputNode base functions everywhere

third_party/WebKit/Source/core/layout/ng/ng_block_child_iterator_test.cc

 // Copyright 2017 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/layout/ng/ng_block_child_iterator.h"
 
 #include "core/layout/LayoutTestHelper.h"
 #include "core/layout/ng/ng_block_break_token.h"
 #include "core/layout/ng/ng_block_node.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 37 matching lines @@
         <div id='child3'></div>
       </div>
     )HTML");
   NGBlockNode* container = new NGBlockNode(
       toLayoutBlockFlow(getLayoutObjectByElementId("container")));
   NGLayoutInputNode* node1 = container->FirstChild();
   NGLayoutInputNode* node2 = node1->NextSibling();
   NGLayoutInputNode* node3 = node2->NextSibling();
 
   Vector<RefPtr<NGBreakToken>> child_break_tokens;
-  child_break_tokens.push_back(NGBlockBreakToken::create(toNGBlockNode(node1)));
+  child_break_tokens.push_back(NGBlockBreakToken::create(node1));
   RefPtr<NGBlockBreakToken> parent_token =
       NGBlockBreakToken::create(container, LayoutUnit(50), child_break_tokens);
 
   // The iterator should loop through two children.
   NGBlockChildIterator iterator(node1, parent_token.get());
   ASSERT_EQ(NGBlockChildIterator::Entry(node2, nullptr), iterator.NextChild());
   ASSERT_EQ(NGBlockChildIterator::Entry(node3, nullptr), iterator.NextChild());
   ASSERT_EQ(NGBlockChildIterator::Entry(nullptr, nullptr),
             iterator.NextChild());
 
-  child_break_tokens.push_back(NGBlockBreakToken::create(toNGBlockNode(node2)));
+  child_break_tokens.push_back(NGBlockBreakToken::create(node2));
   parent_token =
       NGBlockBreakToken::create(container, LayoutUnit(50), child_break_tokens);
 
   // The iterator should loop through two children.
   NGBlockChildIterator iterator2(node1, parent_token.get());
   ASSERT_EQ(NGBlockChildIterator::Entry(node1, nullptr), iterator2.NextChild());
   ASSERT_EQ(NGBlockChildIterator::Entry(node3, nullptr), iterator2.NextChild());
   ASSERT_EQ(NGBlockChildIterator::Entry(nullptr, nullptr),
             iterator2.NextChild());
 }
 
 TEST_F(NGBlockChildIteratorTest, BreakTokenWithUnFinishedChild) {
   setBodyInnerHTML(R"HTML(
       <div id='container'>
         <div id='child1'></div>
         <div id='child2'></div>
         <div id='child3'></div>
       </div>
     )HTML");
   NGBlockNode* container = new NGBlockNode(
       toLayoutBlockFlow(getLayoutObjectByElementId("container")));
   NGLayoutInputNode* node1 = container->FirstChild();
   NGLayoutInputNode* node2 = node1->NextSibling();
   NGLayoutInputNode* node3 = node2->NextSibling();
 
   Vector<RefPtr<NGBreakToken>> child_break_tokens;
-  RefPtr<NGBreakToken> child_token = NGBlockBreakToken::create(
-      toNGBlockNode(node1), LayoutUnit(), child_break_tokens);
+  RefPtr<NGBreakToken> child_token =
+      NGBlockBreakToken::create(node1, LayoutUnit(), child_break_tokens);
   child_break_tokens.push_back(child_token);
   RefPtr<NGBlockBreakToken> parent_token =
       NGBlockBreakToken::create(container, LayoutUnit(50), child_break_tokens);
 
   // The iterator should loop through three children, one with a break token.
   NGBlockChildIterator iterator(node1, parent_token.get());
   ASSERT_EQ(NGBlockChildIterator::Entry(node1, child_token.get()),
             iterator.NextChild());
   ASSERT_EQ(NGBlockChildIterator::Entry(node2, nullptr), iterator.NextChild());
   ASSERT_EQ(NGBlockChildIterator::Entry(node3, nullptr), iterator.NextChild());
   ASSERT_EQ(NGBlockChildIterator::Entry(nullptr, nullptr),
             iterator.NextChild());
 
-  child_token = NGBlockBreakToken::create(toNGBlockNode(node2), LayoutUnit(),
-                                          child_break_tokens);
+  child_token =
+      NGBlockBreakToken::create(node2, LayoutUnit(), child_break_tokens);
   child_break_tokens.push_back(child_token);
   parent_token =
       NGBlockBreakToken::create(container, LayoutUnit(50), child_break_tokens);
 
   // The iterator should loop through three children, one with a break token.
   NGBlockChildIterator iterator2(node1, parent_token.get());
   ASSERT_EQ(NGBlockChildIterator::Entry(node1, nullptr), iterator2.NextChild());
   ASSERT_EQ(NGBlockChildIterator::Entry(node2, child_token.get()),
             iterator2.NextChild());
   ASSERT_EQ(NGBlockChildIterator::Entry(node3, nullptr), iterator2.NextChild());
   ASSERT_EQ(NGBlockChildIterator::Entry(nullptr, nullptr),
             iterator2.NextChild());
 }
 
 }  // namespace
 }  // namespace blink