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

chrome/browser/search_engines/template_url_prepopulate_data_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 "base/command_line.h"
 #include "base/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/memory/scoped_vector.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/search_engines/search_terms_data.h"
 #include "chrome/browser/search_engines/template_url.h"
 #include "chrome/browser/search_engines/template_url_prepopulate_data.h"
 #include "chrome/browser/search_engines/template_url_service.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.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 "grit/generated_resources.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/l10n/l10n_util.h"
 
 typedef testing::Test TemplateURLPrepopulateDataTest;
 
 const int kCountryIds[] = {
     'A'<<8|'D', 'A'<<8|'E', 'A'<<8|'F', 'A'<<8|'G', 'A'<<8|'I',
     'A'<<8|'L', 'A'<<8|'M', 'A'<<8|'N', 'A'<<8|'O', 'A'<<8|'Q',
@@ skipping 268 matching lines @@
 
 TEST(TemplateURLPrepopulateDataTest, GetLogoURLInvalid) {
   TemplateURLData data;
   data.SetURL("http://invalid:search:url/");
   TemplateURL turl(NULL, data);
   GURL logo_url = TemplateURLPrepopulateData::GetLogoURL(
       turl, TemplateURLPrepopulateData::LOGO_100_PERCENT);
 
   EXPECT_TRUE(logo_url.is_empty());
 }