Opt compiler: Add disassembly to the '.cfg' output.

This is automatically added to the '.cfg' output when using the usual
`--dump-cfg` option.

Change-Id: I864bfc3a8299c042e72e451cc7730ad8271e4deb
diff --git a/disassembler/disassembler.h b/disassembler/disassembler.h
index 966ee3a..b99e5c2 100644
--- a/disassembler/disassembler.h
+++ b/disassembler/disassembler.h
@@ -63,6 +63,10 @@
   // Dump instructions within a range.
   virtual void Dump(std::ostream& os, const uint8_t* begin, const uint8_t* end) = 0;
 
+  const DisassemblerOptions* GetDisassemblerOptions() const {
+    return disassembler_options_;
+  }
+
  protected:
   explicit Disassembler(DisassemblerOptions* disassembler_options)
       : disassembler_options_(disassembler_options) {
@@ -80,6 +84,9 @@
   return (value & (1 << bit)) != 0;
 }
 
+extern "C"
+Disassembler* create_disassembler(InstructionSet instruction_set, DisassemblerOptions* options);
+
 }  // namespace art
 
 #endif  // ART_DISASSEMBLER_DISASSEMBLER_H_