MD Settings: Add remaining buttons to keyboard subpage

chrome/browser/resources/settings/device_page/keyboard.html

Index: chrome/browser/resources/settings/device_page/keyboard.html
diff --git a/chrome/browser/resources/settings/device_page/keyboard.html b/chrome/browser/resources/settings/device_page/keyboard.html
index b212a2f2a867d9c90cce7708cd3336a0c5003f8f..7289495dcad6d5d87918d8490bdfbcc0e342e586 100644
--- a/chrome/browser/resources/settings/device_page/keyboard.html
+++ b/chrome/browser/resources/settings/device_page/keyboard.html
@@ -91,8 +91,13 @@
         </div>
       </div>
     </iron-collapse>
-    <!-- TODO(michaelpg): Keyboard shortcuts button. -->
-    <!-- TODO(michaelpg): Language & input button. -->
+    <div id="keyboardOverlay" class="settings-box"
+        on-tap="onShowKeyboardShortcutsOverlayTap_">
+      $i18n{showKeyboardShortcutsOverlay}
+    </div>
+    <div class="settings-box" on-tap="onShowLanguageInputTap_">
+      $i18n{keyboardShowLanguageAndInput}
+    </div>
   </template>
   <script src="keyboard.js"></script>
 </dom-module>