Bug 1574538 - Enable CoreAnimation by default. r=jrmuizel

Differential Revision: https://phabricator.services.mozilla.com/D42377

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

modules/libpref/init/StaticPrefList.yaml

@@ -2946,7 +2946,11 @@
 
 - name: gfx.core-animation.enabled
   type: bool
+#if defined(XP_MACOSX)
+  value: true
+#else
   value: false
+#endif
   mirror: once
 
 #if defined(MOZ_WIDGET_ANDROID)

modules/libpref/init/all.js

@@ -912,7 +912,6 @@ pref("gfx.ycbcr.accurate-conversion", false);
 
 #ifdef XP_MACOSX
   pref("gfx.compositor.glcontext.opaque", false);
-  pref("gfx.core-animation.enabled", false);
 #endif
 
 pref("gfx.webrender.highlight-painted-layers", false);