[MD History] Disable Clear Browsing Data button for supervised users.

chrome/browser/resources/md_history/app.vulcanized.html

Index: chrome/browser/resources/md_history/app.vulcanized.html
diff --git a/chrome/browser/resources/md_history/app.vulcanized.html b/chrome/browser/resources/md_history/app.vulcanized.html
index f8800fce7bfe00b9601316c01550c7d743c3aa66..fe9a2b6d1c87627ec95bef50c7ed36b3e7aad9b3 100644
--- a/chrome/browser/resources/md_history/app.vulcanized.html
+++ b/chrome/browser/resources/md_history/app.vulcanized.html
@@ -3490,6 +3490,11 @@ div.separator {
         margin: 8px 0;
 }
 
+a[disabled] {
+  color: var(--paper-grey-400);
+        pointer-events: none;
+}
+
 #clear-browsing-data {
   justify-content: space-between;
 }
@@ -3566,7 +3571,7 @@ iron-selector > a.iron-selected {
         <paper-ripple></paper-ripple>
       </a>
       <div class="separator"></div>
-      <a href="chrome://settings/clearBrowserData" on-tap="onClearBrowsingDataTap_" id="clear-browsing-data">
+      <a href="chrome://settings/clearBrowserData" on-tap="onClearBrowsingDataTap_" id="clear-browsing-data" disabled$="[[!deletingAllowed_()]]">
         $i18n{clearBrowsingData}
         <iron-icon icon="cr:open-in-new"></iron-icon>
         <paper-ripple id="cbd-ripple"></paper-ripple>