Add virtual and OVERRIDE to base/ implementation files

base/time_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 "base/time.h"
+
 #include <time.h>
 
+#include "base/compiler_specific.h"
 #include "base/threading/platform_thread.h"
-#include "base/time.h"
 #include "build/build_config.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::Time;
 using base::TimeDelta;
 using base::TimeTicks;
 
 // Specialized test fixture allowing time strings without timezones to be
 // tested by comparing them to a known time in the local zone.
 // See also pr_time_unittests.cc
 class TimeTest : public testing::Test {
  protected:
-  virtual void SetUp() {
+  virtual void SetUp() OVERRIDE {
     // Use mktime to get a time_t, and turn it into a PRTime by converting
     // seconds to microseconds.  Use 15th Oct 2007 12:45:00 local.  This
     // must be a time guaranteed to be outside of a DST fallback hour in
     // any timezone.
     struct tm local_comparison_tm = {
       0,            // second
       45,           // minute
       12,           // hour
       15,           // day of month
       10 - 1,       // month
@@ skipping 520 matching lines @@
   exploded.minute = 0;
   exploded.second = 0;
   exploded.millisecond = 0;
   Time t = Time::FromUTCExploded(exploded);
   // Unix 1970 epoch.
   EXPECT_EQ(GG_INT64_C(11644473600000000), t.ToInternalValue());
 
   // We can't test 1601 epoch, since the system time functions on Linux
   // only compute years starting from 1900.
 }