Files.app: Show drive sync state in the progress center.

chrome/browser/resources/file_manager/main.html

Index: chrome/browser/resources/file_manager/main.html
diff --git a/chrome/browser/resources/file_manager/main.html b/chrome/browser/resources/file_manager/main.html
index 88926cc9e3911f64bc2043194ba85a2b7af5dad7..da50c101aa2d9cb7eef08f21dab82cfbea9a8753 100644
--- a/chrome/browser/resources/file_manager/main.html
+++ b/chrome/browser/resources/file_manager/main.html
@@ -281,15 +281,20 @@
         <div class="dialog-navigation-list-footer">
           <div id="progress-center" hidden>
             <li id="progress-center-close-view">
-              <label></label>
               <div class="progress-frame">
+                <label></label>
                 <div class="progress-bar">
                   <div class="progress-track" hidden></div>
                 </div>
               </div>
+              <div class="button-frame">
+                <button class="cancel" tabindex="-1"></button>
+                <button class="open" tabindex="-1"></button>
+              </div>
             </li>
-            <div id="progress-center-open-view"></div>
-            <button class="toggle" tabindex="-1"></button>
+            <div id="progress-center-open-view">
+              <button class="close" tabindex="-1"></button>
+            </div>
           </div>
         </div>
       </div>