diff --git a/polygerrit-ui/app/elements/diff/gr-diff-mode-selector/gr-diff-mode-selector.html b/polygerrit-ui/app/elements/diff/gr-diff-mode-selector/gr-diff-mode-selector.html
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@@ -0,0 +1,50 @@
+<!--
+Copyright (C) 2018 The Android Open Source Project
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<link rel="import" href="../../../bower_components/polymer/polymer.html">
+<link rel="import" href="../../../styles/shared-styles.html">
+<link rel="import" href="../../shared/gr-button/gr-button.html">
+<link rel="import" href="../../shared/gr-rest-api-interface/gr-rest-api-interface.html">
+
+<dom-module id="gr-diff-mode-selector">
+  <template>
+    <style include="shared-styles">
+      gr-button.selected iron-icon {
+        color: var(--color-link);
+      }
+    </style>
+    <gr-button
+        id="sideBySideBtn"
+        link
+        has-tooltip
+        class$="[[_computeSelectedClass(mode, _VIEW_MODES.SIDE_BY_SIDE)]]"
+        title="Side-by-side diff"
+        on-tap="_handleSideBySideTap"><!--
+   --><iron-icon icon="gr-icons:side-by-side"></iron-icon><!--
+ --></gr-button>
+    <gr-button
+        id="unifiedBtn"
+        link
+        has-tooltip
+        title="Unified diff"
+        class$="[[_computeSelectedClass(mode, _VIEW_MODES.UNIFIED)]]"
+        on-tap="_handleUnifiedTap"><!--
+   --><iron-icon icon="gr-icons:unified"></iron-icon><!--
+ --></gr-button>
+    <gr-rest-api-interface id="restAPI"></gr-rest-api-interface>
+  </template>
+  <script src="gr-diff-mode-selector.js"></script>
+</dom-module>