Bug 1842423 - Turn on full-screen-api.enabled in StaticPrefs r=edgar,geckoview-reviewers,m_kato

Differential Revision: https://phabricator.services.mozilla.com/D183084

browser/app/profile/firefox.js

@@ -1700,9 +1700,6 @@ pref("nimbus.validation.enabled", true);
 pref("nimbus.qa.pref-1", "default");
 pref("nimbus.qa.pref-2", "default");
 
-// Enable the DOM fullscreen API.
-pref("full-screen-api.enabled", true);
-
 // Startup Crash Tracking
 // number of startup crashes that can occur before starting into safe mode automatically
 // (this pref has no effect if more than 6 hours have passed since the last crash)

mobile/android/app/mobile.js

@@ -283,8 +283,6 @@ pref("urlclassifier.malwareTable", "goog-harmful-proto,goog-unwanted-proto,mozte
 pref("browser.dom.window.dump.enabled", true);
 pref("devtools.console.stdout.chrome", true);
 
-pref("full-screen-api.enabled", true);
-
 // Transmit UDP busy-work to the LAN when anticipating low latency
 // network reads and on wifi to mitigate 802.11 Power Save Polling delays
 pref("network.tickle-wifi.enabled", true);

modules/libpref/init/StaticPrefList.yaml

@@ -5380,7 +5380,7 @@
 
 - name: full-screen-api.enabled
   type: bool
-  value: false
+  value: true
   mirror: always
 
 - name: full-screen-api.allow-trusted-requests-only