Update web-platform-tests to revision 4984b190341b535c645729b8f99247aace0022fe

tests/wpt/web-platform-tests/resource-timing/resources/buffer-full-utilities.js

@@ -0,0 +1,58 @@
+let appendScript = (src, resolve) => {
+    const script = document.createElement('script');
+    script.type = 'text/javascript';
+    script.src = src;
+    script.onload = resolve;
+    document.body.appendChild(script);
+}
+
+let xhrScript = src => {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", src, false);
+    xhr.send(null);
+}
+
+let waitForNextTask = () => {
+    return new Promise(resolve => {
+        step_timeout(resolve, 0);
+    });
+};
+
+let waitForEventToFire = () => {
+    return new Promise(resolve => {
+        let waitForIt = function() {
+            if (eventFired) {
+                eventFired = false;
+                resolve();
+            } else {
+                step_timeout(waitForIt, 0);
+            }
+        }
+        step_timeout(waitForIt, 0);
+    });
+};
+
+let clearBufferAndSetSize = size => {
+    performance.clearResourceTimings();
+    performance.setResourceTimingBufferSize(size);
+}
+
+let fillUpTheBufferWithSingleResource = src => {
+    return new Promise(resolve => {
+        // This resource gets buffered in the resource timing entry buffer.
+        appendScript(src, resolve);
+    });
+};
+
+let loadResource = src => {
+    return new Promise(resolve => {
+        appendScript(src, resolve);
+    });
+};
+
+let fillUpTheBufferWithTwoResources = async src => {
+    // These resources get buffered in the resource timing entry buffer.
+    await loadResource(src);
+    await loadResource(src + '?second');
+};
+