Skeleton of the Safe Browsing Subresource Filter.

components/subresource_filter/core/browser/subresource_filter_features.cc

Index: components/subresource_filter/core/browser/subresource_filter_features.cc
diff --git a/components/subresource_filter/core/browser/subresource_filter_features.cc b/components/subresource_filter/core/browser/subresource_filter_features.cc
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index 0000000000000000000000000000000000000000..b272ef62e3cc3b062575704e838fa74a1a45e48c
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+++ b/components/subresource_filter/core/browser/subresource_filter_features.cc
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+// 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.h"
+
+#include <string>
+
+#include "base/strings/string_util.h"
+#include "components/variations/variations_associated_data.h"
+
+namespace subresource_filter {
+
+const base::Feature kSafeBrowsingSubresourceFilter{
+    "SubresourceFilter", base::FEATURE_DISABLED_BY_DEFAULT};
+
+const char kActivationStateParameterName[] = "activation_state";
+const char kActivationStateDryRun[] = "dryrun";
+const char kActivationStateEnabled[] = "enabled";
+
+ActivationState GetMaximumActivationState() {
+  std::string activation_state = variations::GetVariationParamValueByFeature(
+      kSafeBrowsingSubresourceFilter, kActivationStateParameterName);
+  if (base::LowerCaseEqualsASCII(activation_state, kActivationStateEnabled))
+    return ActivationState::ENABLED;
+  else if (base::LowerCaseEqualsASCII(activation_state, kActivationStateDryRun))
+    return ActivationState::DRYRUN;
+  return ActivationState::DISABLED;
+}
+
+}  // namespace subresource_filter