Refactor of various layout tests to use RAF

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

 var initialize_InspectorTest = function() {
 
 var results = [];
 
 function consoleOutputHook(messageType)
 {
     InspectorTest.addResult(messageType + ": " + Array.prototype.slice.call(arguments, 1));
 }
 
 console.log = consoleOutputHook.bind(InspectorTest, "log");
@@ skipping 427 matching lines @@
 /**
  * @constructor
  * @param {!string} dirPath
  * @param {!string} name
  * @param {!function(?WebInspector.TempFile)} callback
  */
 InspectorTest.TempFileMock = function(dirPath, name, callback)
 {
     this._chunks = [];
     this._name = name;
-    setTimeout(callback.bind(this, this), 0);
+    requestAnimationFrame(callback.bind(this, this));
 }
 
 InspectorTest.TempFileMock.prototype = {
     /**
      * @param {!Array.<string>} strings
      * @param {!function(boolean)} callback
      */
     write: function(strings, callback)
     {
         this._chunks.push.apply(this._chunks, strings);
-        setTimeout(callback.bind(this, true), 0);
+        requestAnimationFrame(callback.bind(this, true));
     },
 
     finishWriting: function() { },
 
     /**
      * @param {function(?string)} callback
      */
     read: function(callback)
     {
         callback(this._chunks.join(""));
@@ skipping 123 matching lines @@
 
 function reopenFrontend()
 {
     closeFrontend(openFrontendAndIncrement);
 }
 
 function closeFrontend(callback)
 {
     // Do this asynchronously to allow InspectorBackendDispatcher to send response
     // back to the frontend before it's destroyed.
-    setTimeout(function() {
+    requestAnimationFrame(function() {
         testRunner.closeWebInspector();
         callback();
-    }, 0);
+    });
 }
 
 function openFrontendAndIncrement()
 {
     frontendReopeningCount++;
     testRunner.showWebInspector();
-    setTimeout(runTest, 0);
+    requestAnimationFrame(runTest);
 }
 
 function runAfterIframeIsLoaded()
 {
     if (window.testRunner)
         testRunner.waitUntilDone();
     function step()
     {
         if (!window.iframeLoaded)
             setTimeout(step, 100);
@@ skipping 132 matching lines @@
     for (var i = 0; i < results.length; ++i)
         _output(results[i]);
 }
 
 function closeInspectorAndNotifyDone()
 {
     if (window._watchDogTimer)
         clearTimeout(window._watchDogTimer);
 
     testRunner.closeWebInspector();
-    setTimeout(function() {
+    requestAnimationFrame(function() {
         testRunner.notifyDone();
-    }, 0);
+    });
 }
 
 var outputElement;
 
 function createOutputElement()
 {
     outputElement = document.createElement("div");
     // Support for svg - add to document, not body, check for style.
     if (outputElement.style) {
         outputElement.style.whiteSpace = "pre";
         outputElement.style.height = "10px";
         outputElement.style.overflow = "hidden";
     }
     document.documentElement.appendChild(outputElement);
 }
 
 function output(text)
 {
     _output("[page] " + text);
 }
 
 function _output(result)
 {
     if (!outputElement)
         createOutputElement();
     outputElement.appendChild(document.createTextNode(result));
     outputElement.appendChild(document.createElement("br"));
 }