Cleanup: Remove unneeded chrome/common/pref_names.h includes.

chrome/browser/net/proxy_browsertest.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/command_line.h"
 #include "base/path_service.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/login/login_prompt.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
-#include "chrome/common/pref_names.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/test/browser_test_utils.h"
 #include "net/base/test_data_directory.h"
 #include "net/test/spawned_test_server/spawned_test_server.h"
 
@@ skipping 218 matching lines @@
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DataProxyScriptBrowserTest);
 };
 
 IN_PROC_BROWSER_TEST_F(DataProxyScriptBrowserTest, Verify) {
   VerifyProxyScript(browser());
 }
 
 }  // namespace