MD Settings; Lazy instantiate Clear Browsing Data dialog.

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

Index: chrome/browser/resources/settings/privacy_page/privacy_page.html
diff --git a/chrome/browser/resources/settings/privacy_page/privacy_page.html b/chrome/browser/resources/settings/privacy_page/privacy_page.html
index 8d52d8fff1920e354c0fb4001d6a4dbdf0847e4e..85451edb57147a31378ed3c24ce1f600da87be02 100644
--- a/chrome/browser/resources/settings/privacy_page/privacy_page.html
+++ b/chrome/browser/resources/settings/privacy_page/privacy_page.html
@@ -22,11 +22,13 @@
 <dom-module id="settings-privacy-page">
   <template>
     <style include="settings-shared"></style>
+    <template is="dom-if" if="[[showClearBrowsingDataDialog_]]" restamp>
+      <settings-clear-browsing-data-dialog prefs="{{prefs}}">
+      </settings-clear-browsing-data-dialog>
+    </template>
     <settings-animated-pages id="pages" current-route="{{currentRoute}}"
         section="privacy">
       <neon-animatable id="main">
-        <settings-clear-browsing-data-dialog prefs="{{prefs}}">
-        </settings-clear-browsing-data-dialog>
         <div class="settings-box block first">
           <p class="privacy-explanation"
               i18n-values=".innerHTML:improveBrowsingExperience">