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

test/unittests/compiler/load-elimination-unittest.cc

Index: test/unittests/compiler/load-elimination-unittest.cc
diff --git a/test/unittests/compiler/load-elimination-unittest.cc b/test/unittests/compiler/load-elimination-unittest.cc
index f0cd60ec4d68568e4155ba4d6a8b8465d64eb00c..52c3143e2aebe78caa4f8728f3170e51618b0ed2 100644
--- a/test/unittests/compiler/load-elimination-unittest.cc
+++ b/test/unittests/compiler/load-elimination-unittest.cc
@@ -15,7 +15,7 @@ namespace compiler {
 class LoadEliminationTest : public GraphTest {
  public:
   LoadEliminationTest() : GraphTest(3), simplified_(zone()) {}
-  ~LoadEliminationTest() OVERRIDE {}
+  ~LoadEliminationTest() override {}
 
  protected:
   Reduction Reduce(Node* node) {