Bug 1313758 - set media.getusermedia.browser.enabled to default false; r=jesup

MozReview-Commit-ID: 54YTn2p4nnX

--HG--
extra : rebase_source : 0af857dfa795d66c0e507ad69e70ea568cb638b2

dom/media/tests/mochitest/test_getUserMedia_basicTabshare.html

@@ -23,8 +23,10 @@
         return;
     }
     var testVideo = createMediaElement('video', 'testVideo');
+    var pushPrefs = (...p) => SpecialPowers.pushPrefEnv({set: p});
 
     return Promise.resolve()
+      .then(() => pushPrefs(["media.getusermedia.browser.enabled", true]))
       .then(() => getUserMedia({
         video: { mediaSource: "browser",
                  scrollWithPage: true },

modules/libpref/init/all.js

@@ -467,7 +467,7 @@ pref("media.navigator.video.h264.max_mbps", 0);
 pref("media.peerconnection.video.h264_enabled", false);
 pref("media.peerconnection.video.vp9_enabled", true);
 pref("media.getusermedia.aec", 1);
-pref("media.getusermedia.browser.enabled", true);
+pref("media.getusermedia.browser.enabled", false);
 #endif
 // Gonk typically captures at QVGA, and so min resolution is QQVGA or
 // 160x120; 100Kbps is plenty for that.