Replace OVERRIDE->override and FINAL->final since we now require C++11.

src/base/compiler-specific.h

Index: src/base/compiler-specific.h
diff --git a/src/base/compiler-specific.h b/src/base/compiler-specific.h
index ac1eb55fdd7d5feca998611968f4c974af9772ea..ffd5a44e141d069fd8f11996ce15da2c41d02b6c 100644
--- a/src/base/compiler-specific.h
+++ b/src/base/compiler-specific.h
@@ -17,31 +17,6 @@
 #endif
 
 
-// Annotate a virtual method indicating it must be overriding a virtual
-// method in the parent class.
-// Use like:
-//   virtual void bar() OVERRIDE;
-#if V8_HAS_CXX11_OVERRIDE
-#define OVERRIDE override
-#else
-#define OVERRIDE /* NOT SUPPORTED */
-#endif
-
-
-// Annotate a virtual method indicating that subclasses must not override it,
-// or annotate a class to indicate that it cannot be subclassed.
-// Use like:
-//   class B FINAL : public A {};
-//   virtual void bar() FINAL;
-#if V8_HAS_CXX11_FINAL
-#define FINAL final
-#elif V8_HAS___FINAL
-#define FINAL __final
-#else
-#define FINAL /* NOT SUPPORTED */
-#endif
-
-
 // Annotate a function indicating the caller must examine the return value.
 // Use like:
 //   int foo() WARN_UNUSED_RESULT;