RegExp macro assembler clean up.

src/regexp-macro-assembler.h

Index: src/regexp-macro-assembler.h
diff --git a/src/regexp-macro-assembler.h b/src/regexp-macro-assembler.h
index 211ab6ba3948940af8e138913d302b15d61bdcb5..1ff8bd9797239b716d42ff5e3cd5e78363885265 100644
--- a/src/regexp-macro-assembler.h
+++ b/src/regexp-macro-assembler.h
@@ -87,17 +87,6 @@ class RegExpMacroAssembler {
                                       Label* on_equal) = 0;
   virtual void CheckCharacterGT(uc16 limit, Label* on_greater) = 0;
   virtual void CheckCharacterLT(uc16 limit, Label* on_less) = 0;
-  // Check the current character for a match with a literal string.  If we
-  // fail to match then goto the on_failure label.  If check_eos is set then
-  // the end of input always fails.  If check_eos is clear then it is the
-  // caller's responsibility to ensure that the end of string is not hit.
-  // If the label is NULL then we should pop a backtrack address off
-  // the stack and go to that.
-  virtual void CheckCharacters(
-      Vector<const uc16> str,
-      int cp_offset,
-      Label* on_failure,
-      bool check_eos) = 0;
   virtual void CheckGreedyLoop(Label* on_tos_equals_current_position) = 0;
   virtual void CheckNotAtStart(Label* on_not_at_start) = 0;
   virtual void CheckNotBackReference(int start_reg, Label* on_no_match) = 0;