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

src/compiler/load-elimination.h

Index: src/compiler/load-elimination.h
diff --git a/src/compiler/load-elimination.h b/src/compiler/load-elimination.h
index 6917ce36d68682ef3dbf484c8e17a9d46bd014c2..7f819dc94cec39f517d02deebffd6e857ab2ab60 100644
--- a/src/compiler/load-elimination.h
+++ b/src/compiler/load-elimination.h
@@ -11,12 +11,12 @@ namespace v8 {
 namespace internal {
 namespace compiler {
 
-class LoadElimination FINAL : public Reducer {
+class LoadElimination final : public Reducer {
  public:
   LoadElimination() {}
-  ~LoadElimination() FINAL;
+  ~LoadElimination() final;
 
-  Reduction Reduce(Node* node) FINAL;
+  Reduction Reduce(Node* node) final;
 
  private:
   Reduction ReduceLoadField(Node* node);