Bug 1548661 - Enable word-cache expiration timer up through early beta, to monitor stability in the wild. r=lsalzman

Differential Revision: https://phabricator.services.mozilla.com/D29743

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

gfx/thebes/gfxFont.cpp

@@ -182,9 +182,10 @@ gfxFontCache::gfxFontCache(nsIEventTarget* aEventTarget)
     obs->AddObserver(new Observer, "memory-pressure", false);
   }
 
-#ifndef RELEASE_OR_BETA
+#ifdef EARLY_BETA_OR_EARLIER
   // Currently disabled for release builds, due to unexplained crashes
   // during expiration; see bug 717175 & 894798.
+  // Bug 1548661: enabled for early beta, to see what crash-stats shows.
   nsIEventTarget* target = nullptr;
   if (XRE_IsContentProcess() && NS_IsMainThread()) {
     target = aEventTarget;