[DevTools] New harness for inspector-protocol layout tests

third_party/WebKit/LayoutTests/inspector-protocol/page/frameAttachedStacktrace.js

+(async function() {
+  let {page, session, Protocol} = await InspectorTest.startURL('../resources/frame-attached-stacktrace-page.html', '');
+
+  const expectedNumberOfFrames = 3;
+  var currentFrameCount = 0;
+
+  Protocol.Page.onFrameAttached(data => {
+    currentFrameCount++;
+    InspectorTest.log("Frame Attached");
+    var stack = data.params.stack;
+    if (stack) {
+      logCallframes(stack.callFrames);
+    } else {
+      InspectorTest.log("Stack is empty");
+      InspectorTest.log("");
+    }
+    if (currentFrameCount >= expectedNumberOfFrames) {
+      InspectorTest.completeTest();
+    }
+  });
+
+  Protocol.Page.enable();
+  Protocol.Page.reload({ "ignoreCache": false });
+  await Protocol.Page.onceLoadEventFired();
+  session.evaluate('createFrame()');
+
+  // showUrl left in for debugging reasons.
+  function logCallframes(frames) {
+    InspectorTest.log("Call Frames :");
+    if (!frames) {
+      InspectorTest.log("No callframes");
+      InspectorTest.log("");
+      return;
+    }
+    InspectorTest.log("[");
+    for (var i = 0; i < frames.length; i++) {
+      var frame = frames[i];
+      InspectorTest.log("  [" + i + "] : {");
+      if (!frame) {
+        InspectorTest.log("  No Frame");
+        continue;
+      }
+      var url = frame.url || '';
+      if (url.indexOf('data:') !== 0 && url.indexOf('/') !== -1) {
+        var urlParts = url.split('/');
+        url = "<only showing file name>/" + urlParts[urlParts.length - 1];
+      }
+      InspectorTest.log("    columnNumber : " + frame.columnNumber);
+      InspectorTest.log("    functionName : " + frame.functionName);
+      InspectorTest.log("    lineNumber : " + frame.lineNumber);
+      InspectorTest.log("    scriptId : " + (frame.scriptId ? "<scriptId>" : null));
+      InspectorTest.log("    lineNumber : " + frame.lineNumber);
+      InspectorTest.log("    url : " + url);
+      InspectorTest.log("  }");
+    }
+    InspectorTest.log("]");
+    InspectorTest.log("");
+  }
+})();