MD Settings: fix up UMA restart button visual nits

chrome/browser/resources/settings/privacy_page/privacy_page.html

 <link rel="import" href="chrome://resources/cr_elements/policy/cr_policy_vars_css.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/html/web_ui_listener_behavior.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-flex-layout/iron-flex-layout-classes.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/neon-animation/neon-animatable.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-button/paper-button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button-light.html">
 <link rel="import" href="/clear_browsing_data_dialog/clear_browsing_data_dialog.html">
 <link rel="import" href="/controls/settings_checkbox.html">
 <link rel="import" href="/controls/settings_toggle_button.html">
@@ skipping 27 matching lines @@
       /* TODO(dbeam): this is similar to a 1 line checkbox. Worth somehow
        * combining? */
       #metricsReporting {
         align-items: center;
         display: flex;
         min-height: var(--settings-row-min-height);
       }
 
       #metricsReportingCheckbox {
         display: inline-block;
-        flex: 1;
       }
 
       #metricsReporting paper-tooltip {
         --paper-tooltip: var(--cr-policy-tooltip);
       }
 
       #indicator {
         -webkit-margin-start: var(--checkbox-spacing);
       }
+
+      #restart {
+        flex: 1;
+        text-align: end;
+      }
     </style>
     <template is="dom-if" if="[[showClearBrowsingDataDialog_]]" restamp>
       <settings-clear-browsing-data-dialog prefs="{{prefs}}"
           on-close="onDialogClosed_">
       </settings-clear-browsing-data-dialog>
     </template>
     <settings-animated-pages id="pages" section="privacy">
       <neon-animatable route-path="default">
         <div class="settings-box block first">
           <p class="privacy-explanation">
@@ skipping 36 matching lines @@
               $i18n{enableLogging}
             </paper-checkbox>
             <template is="dom-if" if="[[metricsReporting_.managed]]" restamp>
               <iron-icon id="indicator" tabindex=0 icon="cr:domain"></iron-icon>
               <paper-tooltip for="indicator" position="top"
                   fit-to-visible-bounds>
                 $i18n{controlledSettingPolicy}
               </paper-tooltip>
             </template>
             <template is="dom-if" if="[[showRestart_]]" restamp>
-              <paper-button on-tap="onRestartTap_">$i18n{restart}</paper-button>
+              <div id="restart">
+                <paper-button on-tap="onRestartTap_">
+                  $i18n{restart}
+                </paper-button>
+              </div>
             </template>
           </div>
 </if><!-- not chromeos -->
 </if><!-- _google_chrome -->
           <settings-checkbox pref="{{prefs.enable_do_not_track}}"
               label="$i18n{doNotTrack}">
           </settings-checkbox>
 <if expr="chromeos">
           <settings-checkbox
               pref="{{prefs.cros.device.attestation_for_content_protection_enabled}}"
@@ skipping 227 matching lines @@
       </template>
       <template is="dom-if" route-path="/content/siteDetails" no-search>
         <settings-subpage page-title="$i18n{siteSettingsSiteDetails}">
           <site-details site="[[selectedSite]]"></site-details>
         </settings-subpage>
       </template>
     </settings-animated-pages>
   </template>
   <script src="privacy_page.js"></script>
 </dom-module>