Bug 1784489 - Pref on text recognition for nightly and early beta; r=nordzilla

Differential Revision: https://phabricator.services.mozilla.com/D154532

modules/libpref/init/all.js

@@ -180,8 +180,14 @@ pref("dom.keyboardevent.keypress.hack.use_legacy_keycode_and_charcode.addl", "")
 // explanation for the detail.
 pref("dom.mouseevent.click.hack.use_legacy_non-primary_dispatch", "");
 
-// Enable experimental text recognition features for supported OSes.
+// Text recognition is a macOS 10.15+ feature that is currently in development.
-pref("dom.text-recognition.enabled", false);
+// It is surfaced through the browser's context menu. There is no need to pref it
+// on by OS, as there is a specific check if that version of the OS supports the feature.
+#ifdef EARLY_BETA_OR_EARLIER
+  pref("dom.text-recognition.enabled", true);
+#else
+  pref("dom.text-recognition.enabled", false);
+#endif
 
 // Fastback caching - if this pref is negative, then we calculate the number
 // of content viewers to cache based on the amount of available memory.