Remove logging.h from cc files that don't use it.

base/pr_time_unittest.cc

 // Copyright (c) 2006-2008 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 <time.h>
 
-#include "base/logging.h"
 #include "base/third_party/nspr/prtime.h"
 #include "base/time.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::Time;
 
 namespace {
 
 // time_t representation of 15th Oct 2007 12:45:00 PDT
 PRTime comparison_time_pdt = 1192477500 * Time::kMicrosecondsPerSecond;
@@ skipping 243 matching lines @@
 
 TEST_F(PRTimeTest, ParseTimeTestNotNormalized2) {
   PRTime parsed_time = 0;
   PRStatus result = PR_ParseTimeString("Sun Oct 14 36:45 PDT 2007",
                                        PR_FALSE, &parsed_time);
   EXPECT_EQ(PR_SUCCESS, result);
   EXPECT_EQ(comparison_time_pdt, parsed_time);
 }
 
 }  // namespace