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

src/compiler/simplified-operator.h

Index: src/compiler/simplified-operator.h
diff --git a/src/compiler/simplified-operator.h b/src/compiler/simplified-operator.h
index 9cd203381a606624cc0ea2a90cd1a1cd961b2864..08cd0ec13e3d44bdb653c4f839110079d1818ccc 100644
--- a/src/compiler/simplified-operator.h
+++ b/src/compiler/simplified-operator.h
@@ -34,7 +34,7 @@ std::ostream& operator<<(std::ostream&, BaseTaggedness);
 
 
 // An access descriptor for loads/stores of array buffers.
-class BufferAccess FINAL {
+class BufferAccess final {
  public:
   explicit BufferAccess(ExternalArrayType external_array_type)
       : external_array_type_(external_array_type) {}
@@ -124,7 +124,7 @@ ElementAccess const& ElementAccessOf(const Operator* op) WARN_UNUSED_RESULT;
 //   - Bool: a tagged pointer to either the canonical JS #false or
 //           the canonical JS #true object
 //   - Bit: an untagged integer 0 or 1, but word-sized
-class SimplifiedOperatorBuilder FINAL {
+class SimplifiedOperatorBuilder final {
  public:
   explicit SimplifiedOperatorBuilder(Zone* zone);