Add an infrastructure to query history.google.com about other forms of browsing history.

components/browsing_data/history_notice_utils.h

Index: components/browsing_data/history_notice_utils.h
diff --git a/components/browsing_data/history_notice_utils.h b/components/browsing_data/history_notice_utils.h
new file mode 100644
index 0000000000000000000000000000000000000000..32c2ee55f99e6da33beb4aa1963df81ebed35bb9
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+++ b/components/browsing_data/history_notice_utils.h
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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.
+
+#ifndef COMPONENTS_BROWSING_DATA_HISTORY_NOTICE_UTILS_H_
+#define COMPONENTS_BROWSING_DATA_HISTORY_NOTICE_UTILS_H_
+
+namespace history {
+class WebHistoryService;
+}
+
+class ProfileSyncService;
+
+namespace browsing_data {
+
+// Whether the Clear Browsing Data UI should show a notice about the existence
+// of other forms of browsing history stored in user's account.
+bool ShouldShowNoticeAboutOtherFormsOfBrowsingHistory(
+    const ProfileSyncService* sync_service,
+    const history::WebHistoryService* history_service);
+
+}  // namespace browsing_data
+
+#endif  // COMPONENTS_BROWSING_DATA_HISTORY_NOTICE_UTILS_H_