x86-64 disassembler support.

Change-Id: I0ae39ae1ffdae2500ff368354f9e4702445176f0
diff --git a/disassembler/disassembler_arm.h b/disassembler/disassembler_arm.h
index e34274e..f6d7fda 100644
--- a/disassembler/disassembler_arm.h
+++ b/disassembler/disassembler_arm.h
@@ -24,12 +24,13 @@
 namespace art {
 namespace arm {
 
-class DisassemblerArm : public Disassembler {
+class DisassemblerArm FINAL : public Disassembler {
  public:
-  DisassemblerArm();
+  DisassemblerArm() {
+  }
 
-  virtual size_t Dump(std::ostream& os, const uint8_t* begin);
-  virtual void Dump(std::ostream& os, const uint8_t* begin, const uint8_t* end);
+  size_t Dump(std::ostream& os, const uint8_t* begin) OVERRIDE;
+  void Dump(std::ostream& os, const uint8_t* begin, const uint8_t* end) OVERRIDE;
 
  private:
   void DumpArm(std::ostream& os, const uint8_t* instr);