Split testing_pref_service.h/.cc into two parts, generic vs. Chrome-specific.

chrome/browser/net/chrome_network_delegate_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 "chrome/browser/net/chrome_network_delegate.h"
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/prefs/public/pref_member.h"
 #include "chrome/browser/extensions/event_router_forwarder.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
-#include "chrome/test/base/testing_pref_service.h"
+#include "chrome/test/base/testing_pref_service_syncable.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/test_browser_thread.h"
 #include "net/base/completion_callback.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 class ChromeNetworkDelegateTest : public testing::Test {
  protected:
   ChromeNetworkDelegateTest()
@@ skipping 245 matching lines @@
                        "q=google");
 
   // Test the home page with parameters and safe set to off.
   CheckAddedParameters("http://google.com/search?q=google&safe=off",
                        "q=google&safe=off");
 
   // Test the home page with parameters and safe set to active.
   CheckAddedParameters("http://google.com/search?q=google&safe=active",
                        "q=google&safe=active");
 }