[NTPSnippets] Switch from TickClock to Clock for storing the last background fetched time.

chrome/browser/resources/snippets_internals.html

Index: chrome/browser/resources/snippets_internals.html
diff --git a/chrome/browser/resources/snippets_internals.html b/chrome/browser/resources/snippets_internals.html
index 0e4ff0bf64859c9c071b26f0b4cbd1ad65e46799..dfde493ab2e915ab032c84b59e75cd6de330ea39 100644
--- a/chrome/browser/resources/snippets_internals.html
+++ b/chrome/browser/resources/snippets_internals.html
@@ -92,6 +92,17 @@ found in the LICENSE file.
     </div>
   </div>
 
+  <div id="remote-content-suggestions" class="">
+    <h2>Remote content suggestions</h2>
+    <div>
+      <span>Last Background Fetch Time: </span>
+      <span id="last-background-fetch-time-label"></span>
+    </div>
+    <button id="background-fetch-button" type="button">
+      Fetch remote suggestions in the background
+    </button>
+  </div>
+
   <div id="content-suggestions">
     <h2>Content suggestions by category
       <span class="detail">(click for details)</span>