tools/gn: Remove includes of basictypes.h.

tools/gn/parse_tree.h

 // 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.
 
 #ifndef TOOLS_GN_PARSE_TREE_H_
 #define TOOLS_GN_PARSE_TREE_H_
 
 #include <vector>
 
-#include "base/basictypes.h"
+#include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "tools/gn/err.h"
 #include "tools/gn/token.h"
 #include "tools/gn/value.h"
 
 class AccessorNode;
 class BinaryOpNode;
 class BlockCommentNode;
 class BlockNode;
 class ConditionNode;
@@ skipping 489 matching lines @@
   const Token& value() const { return value_; }
   void set_value(const Token& t) { value_ = t; }
 
  private:
   Token value_;
 
   DISALLOW_COPY_AND_ASSIGN(EndNode);
 };
 
 #endif  // TOOLS_GN_PARSE_TREE_H_