don't show metrics reporting option on chromium

chrome/browser/resources/options2/browser_options.html

 <div id="settings" class="page" hidden>
   <header>
     <h1 i18n-content="settingsTitle"></h1>
     <span id="browser-options-search-field-container"
         class="search-field-container">
       <input id="search-field" type="search"
           i18n-values="placeholder:searchPlaceholder;
                        aria-label:searchPlaceholder" incremental>
     </span>
   </header>
@@ skipping 310 matching lines @@
       </div>
 <if expr="pp_ifdef('_google_chrome')">
       <div class="checkbox">
         <label>
           <input id="spellingServiceEnabled"
               pref="spellcheck.use_spelling_service"
               metric="Options_UseSpellingServiceCheckbox" type="checkbox">
           <span i18n-content="spellingPref"></span>
         </label>
       </div>
-</if>
       <div id="metricsReportingSetting" class="checkbox">
         <label>
-<if expr="pp_ifdef('_google_chrome') and pp_ifdef('chromeos')">
+<if expr="pp_ifdef('chromeos')">
           <input id="metricsReportingEnabled"
               pref="cros.metrics.reportingEnabled" type="checkbox">
 </if>
-<if expr="pp_ifdef('_google_chrome') and not pp_ifdef('chromeos')">
+<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>
   <!-- By default, the bluetooth section is hidden.  It is only
        visible if the command line flag 'enable_bluetooth' is set
        and a bluetooth adapter is discovered or emmulating ChromeOS. -->
 <if expr="pp_ifdef('chromeos')">
   <section id="bluetooth-devices" hidden>
     <h3 i18n-content="bluetooth"></h3>
     <div id="bluetooth-options-div">
       <div class="checkbox">
@@ skipping 257 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>