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

src/compiler/simplified-operator-reducer.h

Index: src/compiler/simplified-operator-reducer.h
diff --git a/src/compiler/simplified-operator-reducer.h b/src/compiler/simplified-operator-reducer.h
index bc2672354bd9743f7705b21e3b64dc3f5c6d722b..53e9821f2f369468587b8ffa794dcf885a0ad770 100644
--- a/src/compiler/simplified-operator-reducer.h
+++ b/src/compiler/simplified-operator-reducer.h
@@ -21,12 +21,12 @@ namespace compiler {
 class JSGraph;
 class MachineOperatorBuilder;
 
-class SimplifiedOperatorReducer FINAL : public Reducer {
+class SimplifiedOperatorReducer final : public Reducer {
  public:
   explicit SimplifiedOperatorReducer(JSGraph* jsgraph);
-  ~SimplifiedOperatorReducer() FINAL;
+  ~SimplifiedOperatorReducer() final;
 
-  Reduction Reduce(Node* node) FINAL;
+  Reduction Reduce(Node* node) final;
 
  private:
   Reduction Change(Node* node, const Operator* op, Node* a);