replace OVERRIDE and FINAL with override and final in sandbox/

sandbox/mac/xpc_message_server_unittest.cc

Index: sandbox/mac/xpc_message_server_unittest.cc
diff --git a/sandbox/mac/xpc_message_server_unittest.cc b/sandbox/mac/xpc_message_server_unittest.cc
index 2e2a9ab7b808d42ee87150b48ea177f21fd5458c..af8280e4a21b493a798a390bdca358bcae693e09 100644
--- a/sandbox/mac/xpc_message_server_unittest.cc
+++ b/sandbox/mac/xpc_message_server_unittest.cc
@@ -22,7 +22,7 @@ namespace sandbox {
 
 class XPCMessageServerTest : public testing::Test {
  public:
-  virtual void SetUp() OVERRIDE {
+  virtual void SetUp() override {
     if (!RunXPCTest())
       return;
     ASSERT_TRUE(InitializeXPC());
@@ -68,7 +68,7 @@ class BlockDemuxer : public MessageDemuxer {
     return true;
   }
 
-  virtual void DemuxMessage(IPCMessage request) OVERRIDE {
+  virtual void DemuxMessage(IPCMessage request) override {
     demux_block_(request);
   }