DevTools: Make network events continuous on Timeline

third_party/WebKit/LayoutTests/http/tests/inspector/timeline-test.js

 var initialize_Timeline = function() {
 
 InspectorTest.preloadPanel("timeline");
 WebInspector.TempFile = InspectorTest.TempFileMock;
 
 // Scrub values when printing out these properties in the record or data field.
 InspectorTest.timelinePropertyFormatters = {
     children: "formatAsTypeName",
     endTime: "formatAsTypeName",
     requestId: "formatAsTypeName",
@@ skipping 204 matching lines @@
             InspectorTest.printTimelineRecordProperties(records[i]);
         if (formatter)
             formatter(records[i]);
         InspectorTest.innerPrintTimelinePresentationRecords(records[i].children(), typeName, formatter);
     }
 };
 
 // Dump just the record name, indenting output on separate lines for subrecords
 InspectorTest.dumpTimelineRecord = function(record, detailsCallback, level, filterTypes)
 {
-    if (typeof level !== "number")
-        level = 0;
-    var message = "";
-    for (var i = 0; i < level ; ++i)
-        message = "----" + message;
+    level = level || 0;
+    var message = "----".repeat(level);
     if (level > 0)
-        message = message + "> ";
+        message += "> ";
     if (record.type() === WebInspector.TimelineModel.RecordType.TimeStamp
         || record.type() === WebInspector.TimelineModel.RecordType.ConsoleTime) {
         message += WebInspector.TimelineUIUtils.eventTitle(record.traceEvent());
     } else  {
         message += record.type();
     }
     if (detailsCallback)
         message += " " + detailsCallback(record);
     InspectorTest.addResult(message);
 
     var children = record.children();
     var numChildren = children.length;
     for (var i = 0; i < numChildren; ++i) {
         if (filterTypes && filterTypes.indexOf(children[i].type()) == -1)
             continue;
         InspectorTest.dumpTimelineRecord(children[i], detailsCallback, level + 1, filterTypes);
     }
 }
 
 InspectorTest.dumpTimelineModelRecord = function(record, level)
 {
-    if (typeof level !== "number")
-        level = 0;
-    var prefix = "";
-    for (var i = 0; i < level ; ++i)
-        prefix = "----" + prefix;
+    level = level || 0;
+    var prefix = "----".repeat(level);
     if (level > 0)
-        prefix = prefix + "> ";
+        prefix += "> ";
     InspectorTest.addResult(prefix + record.type() + ": " + (WebInspector.TimelineUIUtils.buildDetailsTextForTraceEvent(record.traceEvent(), null) || ""));
 
     var numChildren = record.children() ? record.children().length : 0;
     for (var i = 0; i < numChildren; ++i)
         InspectorTest.dumpTimelineModelRecord(record.children()[i], level + 1);
 }
 
 // Dump just the record name, indenting output on separate lines for subrecords
 InspectorTest.dumpPresentationRecord = function(presentationRecord, detailsCallback, level, filterTypes)
 {
     var record = !presentationRecord.presentationParent() ? null : presentationRecord.record();
-    if (typeof level !== "number")
-        level = 0;
-    var message = "";
-    for (var i = 0; i < level ; ++i)
-        message = "----" + message;
+    level = level || 0;
+    var message = "----".repeat(level);
     if (level > 0)
-        message = message + "> ";
+        message += "> ";
     if (!record) {
         message += "Root";
     } else if (presentationRecord.coalesced()) {
         message += record.type() + " x " + presentationRecord.presentationChildren().length;
     } else if (record.type() === WebInspector.TimelineModel.RecordType.TimeStamp
         || record.type() === WebInspector.TimelineModel.RecordType.ConsoleTime) {
         message += WebInspector.TimelineUIUtils.eventTitle(record.traceEvent());
     } else {
         message += record.type();
     }
@@ skipping 146 matching lines @@
         if (!--count) {
             callback();
             return;
         }
         if (window.testRunner)
             testRunner.capturePixelsAsyncThen(requestAnimationFrame.bind(window, makeFrame));
         else
             window.requestAnimationFrame(makeFrame);
     }
 }