Update web-platform-tests to revision 3f9178031eec5374c9a7d5709a7e11ba4a1955ed

tests/wpt/web-platform-tests/media-source/idlharness.any.js

@@ -0,0 +1,59 @@
+// META: script=/resources/WebIDLParser.js
+// META: script=/resources/idlharness.js
+
+// https://w3c.github.io/media-source/
+
+'use strict';
+
+var mediaSource;
+var sourceBuffer;
+var video = document.createElement("video");
+
+promise_test(async t => {
+  const srcs = ['media-source', 'dom', 'html', 'url'];
+  const [idl, dom, html, url] = await Promise.all(
+      srcs.map(i => fetch(`/interfaces/${i}.idl`).then(r => r.text())));
+
+  var idlArray = new IdlArray();
+  idlArray.add_idls(idl);
+  idlArray.add_dependency_idls(dom);
+  idlArray.add_dependency_idls(html);
+  idlArray.add_dependency_idls(url);
+
+  const testIdls = new Promise(resolve => {
+    try {
+      mediaSource = new MediaSource();
+      video.src = URL.createObjectURL(mediaSource);
+      mediaSource.addEventListener("sourceopen", function () {
+        var defaultType ='video/webm;codecs="vp8,vorbis"';
+        if (MediaSource.isTypeSupported(defaultType)) {
+          sourceBuffer = mediaSource.addSourceBuffer(defaultType);
+        } else {
+          sourceBuffer = mediaSource.addSourceBuffer('video/mp4');
+        }
+        sourceBuffer.addEventListener("updateend", function (e) {
+          mediaSource.endOfStream();
+          resolve();
+        });
+        sourceBuffer.appendBuffer(new ArrayBuffer());
+      });
+    } catch (e) {
+      // Will be surfaced in idlharness.js's test_object below.
+    }
+  })
+
+  idlArray.add_objects({
+    MediaSource: ['mediaSource'],
+    SourceBuffer: ['sourceBuffer'],
+    SourceBufferList: ['mediaSource.sourceBuffers']
+  });
+
+  const timeout = new Promise((_, reject) => t.step_timeout(reject, 3000));
+  return Promise
+      .race([testIdls, timeout])
+      .then(() => { idlArray.test(); })
+      .catch(() => {
+        idlArray.test();
+        return Promise.reject('Failed to create media-source objects')
+      });
+}, 'media-source interfaces');