MSE: Update tests to expect failure w.r.t. Chromium LegacyFrameProcessor duration logic change

LayoutTests/http/tests/media/media-source/mediasource-util.js

 (function(window) {
     // Set the testharness.js timeout to 120 seconds so that it is higher than
     // the LayoutTest timeout. This prevents testharness.js from prematurely
     // terminating tests and allows the LayoutTest runner to control when to
     // timeout the test.
     // FIXME: Change this to use explicit_timeout instead once /resources/testharness.js
     //        is updated to a more recent version.
     setup({ timeout: 120000 });
 
     var SEGMENT_INFO_LIST = [
         {
             url: '/media/resources/media-source/webm/test.webm',
             type: 'video/webm; codecs="vp8, vorbis"',
-            duration: 6.042,
+            // FIXME: Get the init segment duration fixed to match duration after append.
+            //        See http://crbug.com/354284.
+            durationInInitSegment: 6.042,
+            duration: 6.051,
+            // Supports jagged-ended stream end timestamps with some less than duration:
+            bufferedRangeEndBeforeEndOfStream: 6.042,
             init: { offset: 0, size: 4357 },
             media: [
                 {  offset: 4357, size: 11830, timecode: 0 },
                 {  offset: 16187, size: 12588, timecode: 0.385 },
                 {  offset: 28775, size: 14588, timecode: 0.779 },
                 {  offset: 43363, size: 13023, timecode: 1.174 },
                 {  offset: 56386, size: 13127, timecode: 1.592 },
                 {  offset: 69513, size: 14456, timecode: 1.987 },
                 {  offset: 83969, size: 13458, timecode: 2.381 },
                 {  offset: 97427, size: 14566, timecode: 2.776 },
                 {  offset: 111993, size: 13201, timecode: 3.171 },
                 {  offset: 125194, size: 14061, timecode: 3.566 },
                 {  offset: 139255, size: 15353, timecode: 3.96 },
                 {  offset: 154608, size: 13618, timecode: 4.378 },
                 {  offset: 168226, size: 15094, timecode: 4.773 },
                 {  offset: 183320, size: 13069, timecode: 5.168 },
                 {  offset: 196389, size: 13788, timecode: 5.563 },
                 {  offset: 210177, size: 9009, timecode: 5.957 },
             ],
         },
         {
             url: '/media/resources/media-source/mp4/test.mp4',
             type: 'video/mp4; codecs="mp4a.40.2, avc1.4D401E"',
-            duration: 6.0368,
+            durationInInitSegment: 6.0368,
+            duration: 6.0424,
+            bufferedRangeEndBeforeEndOfStream: 6.0368,
             init: { offset: 0, size: 1178 },
             media: [
                 {  offset: 1246, size: 23828, timecode: 0 },
                 {  offset: 25142, size: 25394, timecode: 0.797 },
                 {  offset: 50604, size: 24761, timecode: 1.594 },
                 {  offset: 75433, size: 25138, timecode: 2.390 },
                 {  offset: 100639, size: 22935, timecode: 3.187 },
                 {  offset: 123642, size: 24995, timecode: 3.984},
                 {  offset: 148637, size: 24968, timecode: 4.781 },
                 {  offset: 173689, size: 19068, timecode: 5.578 },
@@ skipping 332 matching lines @@
         return s + " }";
     }
 
     window['assertBufferedEquals'] = function(obj, expected, description)
     {
         var actual = timeRangesToString(obj.buffered);
         assert_equals(actual, expected, description);
     };
 
 })(window);