Cleanup: Remove unneeded path_service.h includes.

components/history/core/browser/url_database_unittest.cc

 // Copyright 2014 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/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
-#include "base/path_service.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/history/core/browser/keyword_search_term.h"
 #include "components/history/core/browser/url_database.h"
 #include "sql/connection.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::Time;
 using base::TimeDelta;
 
@@ skipping 305 matching lines @@
   ASSERT_EQ(1u, rows.size());
   EXPECT_EQ(keyword2, rows[0].term);
   EXPECT_EQ(url_id3, rows[0].url_id);
   rows.clear();
   // No row for keyword.
   ASSERT_TRUE(GetKeywordSearchTermRows(keyword, &rows));
   EXPECT_TRUE(rows.empty());
 }
 
 }  // namespace history