replace 'virtual ... OVERRIDE' with '... override'

base/memory/linked_ptr_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <string>
 
 #include "base/memory/linked_ptr.h"
 #include "base/strings/stringprintf.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
 int num = 0;
 
 std::string history;
 
 // Class which tracks allocation/deallocation
 struct A {
   A(): mynum(num++) { history += base::StringPrintf("A%d ctor\n", mynum); }
   virtual ~A() { history += base::StringPrintf("A%d dtor\n", mynum); }
   virtual void Use() { history += base::StringPrintf("A%d use\n", mynum); }
   int mynum;
 };
 
 // Subclass
 struct B: public A {
   B() { history += base::StringPrintf("B%d ctor\n", mynum); }
   virtual ~B() { history += base::StringPrintf("B%d dtor\n", mynum); }
-  virtual void Use() OVERRIDE {
-    history += base::StringPrintf("B%d use\n", mynum);
-  }
+  void Use() override { history += base::StringPrintf("B%d use\n", mynum); }
 };
 
 }  // namespace
 
 TEST(LinkedPtrTest, Test) {
   {
     linked_ptr<A> a0, a1, a2;
     a0 = a0;
     a1 = a2;
     ASSERT_EQ(a0.get(), static_cast<A*>(NULL));
@@ skipping 59 matching lines @@
     "A2 dtor\n"
     "A0 use\n"
     "A0 use\n"
     "A1 use\n"
     "A3 ctor\n"
     "A0 dtor\n"
     "A3 dtor\n"
     "A1 dtor\n"
   );
 }