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

chrome/installer/util/helper_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 <windows.h>
 
 #include <fstream>
 #include <iostream>
 
 #include "base/base_paths.h"
 #include "base/file_util.h"
-#include "base/logging.h"
 #include "base/path_service.h"
 #include "base/process_util.h"
 #include "base/scoped_ptr.h"
 #include "base/string_util.h"
 #include "chrome/installer/util/helper.h"
 #include "chrome/installer/util/work_item.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
   class SetupHelperTest : public testing::Test {
@@ skipping 163 matching lines @@
   EXPECT_FALSE(file_util::PathExists(chrome_dir_1));
   EXPECT_FALSE(file_util::PathExists(chrome_dir_3));
   // every thing under in used version should stay
   EXPECT_TRUE(file_util::PathExists(chrome_dir_2));
   EXPECT_TRUE(file_util::PathExists(chrome_dll_2));
   EXPECT_TRUE(file_util::PathExists(chrome_othera_2));
   EXPECT_TRUE(file_util::PathExists(chrome_otherb_2));
   // the latest version should stay
   EXPECT_TRUE(file_util::PathExists(chrome_dll_4));
 }