Bug 1801929 - Replace 'Total Cookie Protection' learn more link with support-link. r=pbz,mconley,settings-reviewers

Differential Revision: https://phabricator.services.mozilla.com/D167420

browser/app/profile/firefox.js

@@ -1851,9 +1851,6 @@ pref("media.gmp-provider.enabled", true);
 // Enable Dynamic First-Party Isolation by default.
 pref("network.cookie.cookieBehavior", 5 /* BEHAVIOR_REJECT_TRACKER_AND_PARTITION_FOREIGN */);
 
-// Target URL for the learn more link of the TCP in standard mode section.
-pref("privacy.restrict3rdpartystorage.preferences.learnMoreURLSuffix", "total-cookie-protection");
-
 // Enable Dynamic First-Party Isolation in the private browsing mode.
 pref("network.cookie.cookieBehavior.pbmode", 5 /* BEHAVIOR_REJECT_TRACKER_AND_PARTITION_FOREIGN */);
 

browser/components/preferences/privacy.inc.xhtml

@@ -117,7 +117,12 @@
                 </hbox>
                 <description>
                   <html:span class="tail-with-learn-more" data-l10n-id="content-blocking-etp-standard-tcp-rollout-description"></html:span>
-                  <label id="tcp-learn-more-link" class="learnMore" data-l10n-id="content-blocking-etp-standard-tcp-rollout-learn-more" is="text-link"/>
+                  <html:a is="moz-support-link"
+                          id="tcp-learn-more-link"
+                          class="learnMore"
+                          data-l10n-id="content-blocking-etp-standard-tcp-rollout-learn-more"
+                          support-page="total-cookie-protection"
+                  />
                 </description>
               </vbox>
               <html:div class="content-blocking-warning info-box-container reload-tabs" hidden="true">

browser/components/preferences/privacy.js

@@ -285,16 +285,6 @@ function setUpContentBlockingWarnings() {
 }
 
 function initTCPStandardSection() {
-  document
-    .getElementById("tcp-learn-more-link")
-    .setAttribute(
-      "href",
-      Services.urlFormatter.formatURLPref("app.support.baseURL") +
-        Services.prefs.getStringPref(
-          "privacy.restrict3rdpartystorage.preferences.learnMoreURLSuffix"
-        )
-    );
-
   let cookieBehaviorPref = Preferences.get("network.cookie.cookieBehavior");
   let updateTCPSectionVisibilityState = () => {
     document.getElementById("etpStandardTCPBox").hidden =

browser/components/preferences/tests/browser_contentblocking_standard_tcp_section.js

@@ -14,9 +14,7 @@ const CAT_PREF = "browser.contentblocking.category";
 
 const LEARN_MORE_URL =
   Services.urlFormatter.formatURLPref("app.support.baseURL") +
-  Services.prefs.getStringPref(
-    "privacy.restrict3rdpartystorage.preferences.learnMoreURLSuffix"
-  );
+  "total-cookie-protection";
 
 const {
   BEHAVIOR_REJECT_TRACKER,