Skeleton of the Safe Browsing Subresource Filter.

components/subresource_filter/core/browser/subresource_filter_features_test_support.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 "components/subresource_filter/core/browser/subresource_filter_features_test_support.h"
+
+#include <map>
+#include <memory>
+
+#include "base/metrics/field_trial.h"
+#include "components/subresource_filter/core/browser/subresource_filter_features.h"
+#include "components/variations/variations_associated_data.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace subresource_filter {
+namespace testing {
+
+namespace {
+const char kTestFieldTrialName[] = "FieldTrialNameShouldNotMatter";
+const char kTestExperimentGroupName[] = "GroupNameShouldNotMatter";
+}  // namespace
+
+ScopedSubresourceFilterFeatureToggle::ScopedSubresourceFilterFeatureToggle(
+    base::FeatureList::OverrideState feature_state,
+    const std::string& maximum_activation_state) {
+  base::FeatureList::ClearInstanceForTesting();
+  variations::testing::ClearAllVariationParams();
+
+  std::map<std::string, std::string> variation_params;
+  variation_params[kActivationStateParameterName] = maximum_activation_state;
+  EXPECT_TRUE(variations::AssociateVariationParams(
+      kTestFieldTrialName, kTestExperimentGroupName, variation_params));
+
+  base::FieldTrial* field_trial = base::FieldTrialList::CreateFieldTrial(
+      kTestFieldTrialName, kTestExperimentGroupName);
+
+  std::unique_ptr<base::FeatureList> feature_list(new base::FeatureList);
+  feature_list->RegisterFieldTrialOverride(kSafeBrowsingSubresourceFilter.name,
+                                           feature_state, field_trial);
+  base::FeatureList::SetInstance(std::move(feature_list));
+}
+
+ScopedSubresourceFilterFeatureToggle::~ScopedSubresourceFilterFeatureToggle() {
+  variations::testing::ClearAllVariationParams();
+  base::FeatureList::ClearInstanceForTesting();
+}
+
+}  // namespace testing
+}  // namespace subresource_filter