Apply TypeChecking to MediaSource IDLs

LayoutTests/http/tests/media/media-source/mediasource-remove.html

Index: LayoutTests/http/tests/media/media-source/mediasource-remove.html
diff --git a/LayoutTests/http/tests/media/media-source/mediasource-remove.html b/LayoutTests/http/tests/media/media-source/mediasource-remove.html
index a65e90962512472434995475ea17f9f17596622c..4306546cbee0e2889b9a7e557b135812cfe933bc 100644
--- a/LayoutTests/http/tests/media/media-source/mediasource-remove.html
+++ b/LayoutTests/http/tests/media/media-source/mediasource-remove.html
@@ -21,6 +21,20 @@
               test.done();
           }, "Test remove with an negative start.");
 
+          mediasource_test(function(test, mediaElement, mediaSource)
+          {
+              var sourceBuffer = mediaSource.addSourceBuffer(MediaSourceUtil.AUDIO_VIDEO_TYPE);
+
+              [ undefined, NaN, Infinity, -Infinity ].forEach(function(item)
+              {
+                  assert_throws(new TypeError(), function()
+                  {
+                      sourceBuffer.remove(item, 2);
+                  }, "remove");
+              });
+
+              test.done();
+          }, "Test remove with non-finite start.");
 
           mediasource_test(function(test, mediaElement, mediaSource)
           {
@@ -181,7 +195,9 @@
 
           removeAppendedDataTests(function(test, sourceBuffer, bufferedRangeEnd, subType)
           {
-              removeAndCheckBufferedRanges(test, sourceBuffer, 0, Number.POSITIVE_INFINITY, "{ }");
+              // Using MAX_VALUE rather than POSITIVE_INFINITY here due to lack
+              // of 'unrestricted' on end parameter. (See comment in SourceBuffer.idl)
+              removeAndCheckBufferedRanges(test, sourceBuffer, 0, Number.MAX_VALUE, "{ }");
           }, "Test removing all appended data.");
 
           removeAppendedDataTests(function(test, sourceBuffer, bufferedRangeEnd, subType)
@@ -216,7 +232,9 @@
                 mp4: "{ [0.000, 1.022) }",
               };
 
-              removeAndCheckBufferedRanges(test, sourceBuffer, 1, Number.POSITIVE_INFINITY, expectations[subType]);
+              // Using MAX_VALUE rather than POSITIVE_INFINITY here due to lack
+              // of 'unrestricted' on end parameter. (See comment in SourceBuffer.idl)
+              removeAndCheckBufferedRanges(test, sourceBuffer, 1, Number.MAX_VALUE, expectations[subType]);
           }, "Test removing the end of appended data.");
         </script>
     </body>