Add OptionsUI and its handler for multiple displays.

chrome/browser/resources/options2/browser_options.html

 <div id="settings" class="page" hidden>
   <header>
     <h1 i18n-content="settingsTitle"></h1>
   </header>
 <if expr="not pp_ifdef('chromeos')">
   <include src="sync_section.html">
 </if>
 <if expr="pp_ifdef('chromeos')">
   <section>
     <h3 i18n-content="sectionTitleInternet"></h3>
@@ skipping 240 matching lines @@
 <if expr="not pp_ifdef('chromeos')">
           <input id="metricsReportingEnabled" type="checkbox">
 </if>
           <span i18n-content="enableLogging"></span>
         </label>
       </div>
 </if>  <!-- pp_ifdef('_google_chrome') -->
     </div>
   </section>
 <if expr="pp_ifdef('chromeos')">
+  <!-- By default, the display section is hidden.  It is only visible if
+       more than one displays are found. -->
+  <section id="display-options-section" hidden>
+    <h3 i18n-content="displayOptionsTitle"></h3>
+    <div>
+      <div>
+        <div class="settings-row">
+          <button id="displayOptionsButton"
+              i18n-content="displayOptionsButton"></button>
+        </div>
+      </div>
+    </div>
+  </section>
+
   <!-- By default, the bluetooth section is hidden.  It is only visible if a
        bluetooth adapter is discovered -->
   <section id="bluetooth-devices" hidden>
     <h3 i18n-content="bluetooth"></h3>
     <div id="bluetooth-options-div">
       <div class="checkbox">
         <label>
           <input type="checkbox" id="enable-bluetooth">
           <span i18n-content="enableBluetooth">
         </label>
@@ skipping 241 matching lines @@
   </section>
 </if>
 </div>  <!-- advanced-settings-container -->
 </div>  <!-- advanced-settings -->
 <footer>
   <button id="advanced-settings-expander" class="link-button"
       i18n-content="showAdvancedSettings">
   </button>
 </footer>
 </div>