[DevTools] Fix and rebaseline inspector/service-workers layout tests.

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

 if (window.GCController)
     GCController.collectAll();
 var initialize_InspectorTest = function() {
 
 var results = [];
 
 function consoleOutputHook(messageType)
 {
     InspectorTest.addResult(messageType + ": " + Array.prototype.slice.call(arguments, 1));
 }
@@ skipping 920 matching lines @@
 InspectorTest.isDedicatedWorker = function(target)
 {
     return target && !target.hasBrowserCapability() && target.hasJSCapability() && !target.hasNetworkCapability() && !target.hasWorkerCapability();
 }
 
 InspectorTest.isServiceWorker = function(target)
 {
     return target && !target.hasBrowserCapability() && !target.hasJSCapability() && target.hasNetworkCapability() && target.hasWorkerCapability();
 }
 
+InspectorTest.describeTargetType = function(target)
+{
+    if (InspectorTest.isDedicatedWorker(target))
+        return "worker";
+    if (InspectorTest.isServiceWorker(target))
+        return "service-worker";
+    if (!target.parentTarget())
+        return "page";
+    return "frame";
+}
+
     };  // initialize_InspectorTest
 
 var initializeCallId = 0;
 var runTestCallId = 1;
 var evalCallbackCallId = 2;
 var frontendReopeningCount = 0;
 
 function reopenFrontend()
 {
     closeFrontend(openFrontendAndIncrement);
@@ skipping 192 matching lines @@
     _output("[page] " + text);
 }
 
 function _output(result)
 {
     if (!outputElement)
         createOutputElement();
     outputElement.appendChild(document.createTextNode(result));
     outputElement.appendChild(document.createElement("br"));
 }