Bug 1421091 - Update wpt expectations. r=baku,karlt

MozReview-Commit-ID: 997zAYWaezz

--HG--
extra : rebase_source : 8279fe5e5488edbbb7666c3f6815d3168503559b
extra : intermediate-source : 8c22cb391d72db3be6c26550bff3aae309a8c01e
extra : source : 4f7cf608ef6658961deec726790c707f565cda73

testing/web-platform/meta/webaudio/the-audio-api/the-audioparam-interface/event-insertion.html.ini

@@ -14,3 +14,12 @@
   [# AUDIT TASK RUNNER FINISHED: 1 out of 4 tasks were failed.]
     expected: FAIL
 
+  [X Output at frame 384 (time 0.0234375) is not equal to 3. Got 98.]
+    expected: FAIL
+
+  [X Output at frame 512 (time 0.03125) is not equal to 4. Got 99.]
+    expected: FAIL
+
+  [< [Insert same event at same time\] 2 out of 12 assertions were failed.]
+    expected: FAIL
+