Change logic for recording redirect pattern histograms.

components/subresource_filter/content/browser/content_activation_list_utils.h

Index: components/subresource_filter/content/browser/content_activation_list_utils.h
diff --git a/components/subresource_filter/content/browser/content_activation_list_utils.h b/components/subresource_filter/content/browser/content_activation_list_utils.h
new file mode 100644
index 0000000000000000000000000000000000000000..dc23a48b4d9b5f85e1677ac469a592be9d74af4f
--- /dev/null
+++ b/components/subresource_filter/content/browser/content_activation_list_utils.h
@@ -0,0 +1,19 @@
+// Copyright 2017 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 COMPONENTS_SUBRESOURCE_FILTER_CONTENT_BROWSER_CONTENT_ACTIVATION_LIST_UTILS_H_
+#define COMPONENTS_SUBRESOURCE_FILTER_CONTENT_BROWSER_CONTENT_ACTIVATION_LIST_UTILS_H_
+
+#include "components/safe_browsing_db/util.h"
+#include "components/subresource_filter/core/common/activation_list.h"
+
+namespace subresource_filter {
+
+ActivationList GetListForThreatTypeAndMetadata(
+    safe_browsing::SBThreatType threat_type,
+    safe_browsing::ThreatPatternType threat_type_metadata);
+
+}  // namespace subresource_filter
+
+#endif  // COMPONENTS_SUBRESOURCE_FILTER_CONTENT_BROWSER_CONTENT_ACTIVATION_LIST_UTILS_H_