Remove redundant casts, use NGLayoutInputNode base functions everywhere

third_party/WebKit/Source/core/layout/ng/ng_block_break_token.h

 // 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.
 
 #ifndef NGBlockBreakToken_h
 #define NGBlockBreakToken_h
 
 #include "core/CoreExport.h"
 #include "core/layout/ng/ng_break_token.h"
 #include "platform/LayoutUnit.h"
@@ skipping 52 matching lines @@
 
   explicit NGBlockBreakToken(NGLayoutInputNode* node);
 
   LayoutUnit used_block_size_;
   Vector<RefPtr<NGBreakToken>> child_break_tokens_;
 };
 
 DEFINE_TYPE_CASTS(NGBlockBreakToken,
                   NGBreakToken,
                   token,
-                  token->Type() == NGBreakToken::kBlockBreakToken,
-                  token.Type() == NGBreakToken::kBlockBreakToken);
+                  token->IsBlockType(),
+                  token.IsBlockType());
 
 }  // namespace blink
 
 #endif  // NGBlockBreakToken_h