Bug 989047 - increase canplaythrough timeouts to accomodate B2G slowness. r=jesup

dom/media/tests/mochitest/mediaStreamPlayback.js

@@ -2,7 +2,13 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-var TIMEOUT_LENGTH = 10000;
+const TIMEUPDATE_TIMEOUT_LENGTH = 10000;
+const ENDED_TIMEOUT_LENGTH = 10000;
+
+/* Time we wait for the canplaythrough event to fire
+ * Note: this needs to be at least 30s because the
+ *       B2G emulator in VMs is really slow. */
+const CANPLAYTHROUGH_TIMEOUT_LENGTH = 60000;
 
 /**
  * This class manages playback of a HTMLMediaElement with a MediaStream.
@@ -123,7 +129,7 @@ MediaStreamPlayback.prototype = {
             timeUpdateCallback, false);
           onError("timeUpdate event never fired");
         }
-      }, TIMEOUT_LENGTH);
+      }, TIMEUPDATE_TIMEOUT_LENGTH);
     };
 
     // Adds a listener intended to be fired when playback is available
@@ -142,7 +148,7 @@ MediaStreamPlayback.prototype = {
           canPlayThroughCallback, false);
         onError("canplaythrough event never fired");
       }
-    }, TIMEOUT_LENGTH);
+    }, CANPLAYTHROUGH_TIMEOUT_LENGTH);
   },
 
   /**
@@ -237,7 +243,7 @@ LocalMediaStreamPlayback.prototype = Object.create(MediaStreamPlayback.prototype
         if (!endedFired) {
           onError("ended event never fired");
         }
-      }, TIMEOUT_LENGTH);
+      }, ENDED_TIMEOUT_LENGTH);
     }
   }
 });