[regexp] fix interpreted irregexp build.

src/regexp/regexp-macro-assembler-irregexp.h

 // Copyright 2012 the V8 project 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 V8_REGEXP_REGEXP_MACRO_ASSEMBLER_IRREGEXP_H_
 #define V8_REGEXP_REGEXP_MACRO_ASSEMBLER_IRREGEXP_H_
 
 #include "src/regexp/regexp-macro-assembler.h"
 
 namespace v8 {
@@ skipping 64 matching lines @@
                                               uc16 minus,
                                               uc16 mask,
                                               Label* on_not_equal);
   virtual void CheckCharacterInRange(uc16 from,
                                      uc16 to,
                                      Label* on_in_range);
   virtual void CheckCharacterNotInRange(uc16 from,
                                         uc16 to,
                                         Label* on_not_in_range);
   virtual void CheckBitInTable(Handle<ByteArray> table, Label* on_bit_set);
+  virtual void CheckPosition(int cp_offset, Label* on_outside_input) {
+    LoadCurrentCharacter(cp_offset, on_outside_input, true);
+  }
+  virtual bool CheckSpecialCharacterClass(uc16 type, Label* on_no_match) {
+    return false;  // No custom support for character classes.
+  }
   virtual void CheckNotBackReference(int start_reg, bool read_backward,
                                      Label* on_no_match);
   virtual void CheckNotBackReferenceIgnoreCase(int start_reg,
                                                bool read_backward,
                                                Label* on_no_match);
   virtual void IfRegisterLT(int register_index, int comparand, Label* if_lt);
   virtual void IfRegisterGE(int register_index, int comparand, Label* if_ge);
   virtual void IfRegisterEqPos(int register_index, Label* if_eq);
 
   virtual IrregexpImplementation Implementation();
@@ skipping 29 matching lines @@
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(RegExpMacroAssemblerIrregexp);
 };
 
 #endif  // V8_INTERPRETED_REGEXP
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_REGEXP_REGEXP_MACRO_ASSEMBLER_IRREGEXP_H_