Bug 1555012 - Enable HTML about:addons by default r=rpl

Differential Revision: https://phabricator.services.mozilla.com/D34337

--HG--
extra : moz-landing-system : lando

browser/app/profile/firefox.js

@@ -47,7 +47,7 @@ pref("extensions.getAddons.langpacks.url", "https://services.addons.mozilla.org/
 pref("extensions.getAddons.discovery.api_url", "https://services.addons.mozilla.org/api/v4/discovery/?lang=%LOCALE%");
 
 // Enable the HTML-based discovery panel at about:addons.
-pref("extensions.htmlaboutaddons.discover.enabled", false);
+pref("extensions.htmlaboutaddons.discover.enabled", true);
 
 // The URL for the privacy policy related to recommended extensions.
 pref("extensions.recommendations.privacyPolicyUrl", "https://www.mozilla.org/privacy/firefox/?utm_source=firefox-browser&utm_medium=firefox-browser&utm_content=privacy-policy-link#addons");

modules/libpref/init/all.js

@@ -5168,7 +5168,7 @@ pref("extensions.webextensions.enablePerformanceCounters", true);
 pref("extensions.webextensions.performanceCountersMaxAge", 5000);
 
 // The HTML about:addons page.
-pref("extensions.htmlaboutaddons.enabled", false);
+pref("extensions.htmlaboutaddons.enabled", true);
 // Whether to allow the inline options browser in HTML about:addons page.
 pref("extensions.htmlaboutaddons.inline-options.enabled", true);
 // Show recommendations on the extension and theme list views.