Fine tuned availability of hotword plugin.

chrome/browser/resources/options/browser_options.html

 <div id="settings" class="page" hidden>
   <header>
     <h1 i18n-content="settingsTitle"></h1>
   </header>
   <include src="reset_profile_settings_banner.html">
   <include src="automatic_settings_reset_banner.html">
 <if expr="not pp_ifdef('chromeos')">
   <include src="sync_section.html">
 </if>
 <if expr="pp_ifdef('chromeos')">
@@ skipping 334 matching lines @@
             </label>
             <a target="_blank" i18n-content="learnMore"
                 i18n-values="href:contentProtectionAttestationLearnMoreURL">
             </a>
             <span class="controlled-setting-indicator"
                 pref="cros.device.attestation_for_content_protection_enabled">
             </span>
           </span>
         </span>
       </div>
+      <div id="hotword-app-list" hidden>
+        <div class="checkbox">
+          <span class="controlled-setting-with-label">
+            <input id="hotword-app-list-enable" pref="hotword.app_list_enabled"
+                type="checkbox">
+            <span>
+              <label for="hotword-app-list-enable"

[Evan Stade, 2014/02/11 18:54:12]

even though there are lots of crappy examples in this file of label outside of
an input, you should actually put the label aroudn the input and span (and then
you don't need for). The problem with outside label + for is that you can click
in between the checkbox and text and nothing happens.

[Jun Mukai, 2014/02/11 19:27:38]

Done.

[Evan Stade, 2014/02/12 23:01:49]

this is not done.  It should look like this:

<label><input><span></span></label>

[Jun Mukai, 2014/02/13 00:08:30]

Fixed.  Sorry for my poor understanding.

+                  i18n-content="enableHotwordAppList">
+              </label>
+            </span>
+        </div>
+      </div>
 </if>
-      <div id ="hotword-search" hidden>
+      <div id="hotword-search" hidden>
         <div class="checkbox">
           <span class="controlled-setting-with-label">
             <input id="hotword-search-enable" pref="hotword.search_enabled"
                 type="checkbox" dialog-pref>
             <span>
               <label for="hotword-search-enable"
                   i18n-values=".innerHTML:hotwordSearchEnable">
               </label>
               <span class="controlled-setting-indicator"
                   pref="hotword.search_enabled" dialog-pref>
@@ skipping 517 matching lines @@
     </div>
   </section>
   </div>  <!-- advanced-settings-container -->
   </div>  <!-- advanced-settings -->
   <footer>
     <button id="advanced-settings-expander" class="link-button"
         i18n-content="showAdvancedSettings">
     </button>
   </footer>
   </div>