Introduce subresource_filter::ConfigurationList and make querying it cheap.

chrome/browser/subresource_filter/subresource_filter_browsertest.cc

 // Copyright 2016 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 <map>
 #include <memory>
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 363 matching lines @@
   void SetRulesetWithRules(const std::vector<proto::UrlRule>& rules) {
     TestRulesetPair test_ruleset_pair;
     ruleset_creator_.CreateRulesetWithRules(rules, &test_ruleset_pair);
     ASSERT_NO_FATAL_FAILURE(
         test_ruleset_publisher_.SetRuleset(test_ruleset_pair.unindexed));
   }
 
   void ToggleFeatures(
       std::unique_ptr<ScopedSubresourceFilterFeatureToggle> features) {
     scoped_feature_toggle_ = std::move(features);
-    ContentSubresourceFilterDriverFactory* driver_factory =
-        ContentSubresourceFilterDriverFactory::FromWebContents(web_contents());
-    driver_factory->set_configuration_for_testing(GetActiveConfiguration());
   }
 
  private:
   TestRulesetCreator ruleset_creator_;
 
   std::unique_ptr<ScopedSubresourceFilterFeatureToggle> scoped_feature_toggle_;
   TestRulesetPublisher test_ruleset_publisher_;
   const bool measure_performance_;
   const bool whitelist_site_on_reload_;
 
@@ skipping 947 matching lines @@
                                    std::string(kSubresourceFilterOnlySuffix)),
               ::testing::IsEmpty());
 
   EXPECT_THAT(tester.GetAllSamples(std::string(kNavigationChainSize) +
                                    std::string(kSubresourceFilterOnlySuffix)),
               ::testing::IsEmpty());
 }
 #endif
 
 }  // namespace subresource_filter