Update defaults for InstantExtended.

chrome/browser/search/instant_unittest_base.h

 // Copyright 2013 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.
 
 #ifndef CHROME_BROWSER_SEARCH_INSTANT_UNITTEST_BASE_H_
 #define CHROME_BROWSER_SEARCH_INSTANT_UNITTEST_BASE_H_
 
 #include <string>
 
+#include "base/metrics/field_trial.h"
 #include "chrome/browser/search/instant_service.h"
 #include "chrome/browser/search_engines/template_url_service.h"
 #include "chrome/test/base/browser_with_test_window_test.h"
 
 class InstantServiceObserver;
 
 // This class provides an extension on top of BrowserWithTestWindowTest, and
 // adds some utility methods which can be useful for various unit tests for
 // Embedded Search / Instant implementation classes.
 class InstantUnitTestBase : public BrowserWithTestWindowTest {
  protected:
+  InstantUnitTestBase();
+  virtual ~InstantUnitTestBase();
+
   virtual void SetUp() OVERRIDE;
   virtual void TearDown() OVERRIDE;
 
+  virtual void SetUpWithoutCacheableNTP();
+  virtual void SetUpHelper();
+
   // Adds and sets the default search provider using the base_url.
   // The base_url should have the http[s]:// prefix and a trailing / after the
   // TLD.
   // It will always use an instant-enabled configuration using a
   // search_terms_replacement_key.
   void SetDefaultSearchProvider(const std::string& base_url);
 
   // Simulates a Google Base URL change as would happen in event of
   // search-domain-check. Note that the GoogleURLTrackerFactory is disabled for
   // tests, so this is required.
   void NotifyGoogleBaseURLUpdate(const std::string& new_google_base_url);
 
   bool IsInstantServiceObserver(InstantServiceObserver* observer);
 
   InstantService* instant_service_;
   TemplateURLService* template_url_service_;
+  scoped_ptr<base::FieldTrialList> field_trial_list_;
 };
 
 #endif  // CHROME_BROWSER_SEARCH_INSTANT_UNITTEST_BASE_H_