Bug 1275472 - Enable suspending of background video only in nightly builds. r=cpearce

MozReview-Commit-ID: 13HJbggtTXH

--HG--
extra : rebase_source : 13cd70b3e67823b5d36b9785ab8c5feac5d72575

dom/media/MediaDecoderStateMachine.cpp

@@ -212,7 +212,7 @@ InitSuspendBackgroundPref()
   if (!sSetupPrefCache) {
     sSetupPrefCache = true;
     Preferences::AddBoolVarCache(&sSuspendBackgroundVideos,
-                                 "media.suspend-bkgnd-video.enabled", true);
+                                 "media.suspend-bkgnd-video.enabled", false);
   }
 }
 

modules/libpref/init/all.js

@@ -367,7 +367,11 @@ pref("media.decoder-doctor.notifications-allowed", "MediaWMFNeeded,MediaWidevine
 pref("media.decoder-doctor.verbose", false);
 
 // Whether to suspend decoding of videos in background tabs.
+#ifdef NIGHTLY_BUILD
 pref("media.suspend-bkgnd-video.enabled", true);
+#else
+pref("media.suspend-bkgnd-video.enabled", false);
+#endif
 
 #ifdef MOZ_WEBRTC
 pref("media.navigator.enabled", true);