Implement $ for non-multiline.

src/regexp-macro-assembler.h

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 75 matching lines @@
   // Bitwise or the current character with the given constant and then
   // check for a match with c.
   virtual void CheckNotCharacterAfterOr(uc16 c,
                                         uc16 or_with,
                                         Label* on_not_equal) = 0;
   // Subtract a constant from the current character, then or with the given
   // constant and then check for a match with c.
   virtual void CheckNotCharacterAfterMinusOr(uc16 c,
                                              uc16 minus_then_or_with,
                                              Label* on_not_equal) = 0;
+  virtual void CheckNotRegistersEqual(int reg1, int reg2, Label* on_not_equal) = 0;
   // Dispatch after looking the current character up in a byte map.  The
   // destinations vector has up to 256 labels.
   virtual void DispatchByteMap(
       uc16 start,
       Label* byte_map,
       const Vector<Label*>& destinations) = 0;
   virtual void DispatchHalfNibbleMap(
       uc16 start,
       Label* half_nibble_map,
       const Vector<Label*>& destinations) = 0;
@@ skipping 67 matching lines @@
   ArraySlice GetBuffer(Vector<T> values);
  private:
   size_t byte_array_size_;
   Handle<ByteArray> current_byte_array_;
   int current_byte_array_free_offset_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_REGEXP_MACRO_ASSEMBLER_H_