Migrate the one-time notice into the MD settings CBD dialog

chrome/browser/resources/settings/clear_browsing_data_dialog/history_deletion_dialog.js

Index: chrome/browser/resources/settings/clear_browsing_data_dialog/history_deletion_dialog.js
diff --git a/chrome/browser/resources/settings/clear_browsing_data_dialog/history_deletion_dialog.js b/chrome/browser/resources/settings/clear_browsing_data_dialog/history_deletion_dialog.js
new file mode 100644
index 0000000000000000000000000000000000000000..82a6b340d5defdc0912dd1e4bc298bdc0a4a0caa
--- /dev/null
+++ b/chrome/browser/resources/settings/clear_browsing_data_dialog/history_deletion_dialog.js
@@ -0,0 +1,27 @@
+// 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.
+
+/**
+ * @fileoverview 'settings-history-deletion-dialog' is a dialog that is
+ * optionally shown inside settings-clear-browsing-data-dialog after deleting
+ * browsing history. It informs the user about the existence of other forms
+ * of browsing history in their account.
+ */
+Polymer({
+  is: 'settings-history-deletion-dialog',
+
+  /** @override */
+  ready: function() {
+    this.$.dialog.open();
+  },
+
+  /**
+   * Tap handler for the "OK" buton.
+   * @private
+   */
+  onOkTap_: function() {
+    this.$.dialog.close();
+  },
+});
+