Refactor of various layout tests to use RAF

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

Index: LayoutTests/http/tests/inspector/inspector-test.js
diff --git a/LayoutTests/http/tests/inspector/inspector-test.js b/LayoutTests/http/tests/inspector/inspector-test.js
index dfa60dfc460bbc53244b852f4eb1534e80a0745a..dedbb144ecef5c39e1887c019e54ba5933e7f570 100644
--- a/LayoutTests/http/tests/inspector/inspector-test.js
+++ b/LayoutTests/http/tests/inspector/inspector-test.js
@@ -445,7 +445,7 @@ 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 = {
@@ -456,7 +456,7 @@ InspectorTest.TempFileMock.prototype = {
     write: function(strings, callback)
     {
         this._chunks.push.apply(this._chunks, strings);
-        setTimeout(callback.bind(this, true), 0);
+        requestAnimationFrame(callback.bind(this, true));
     },
 
     finishWriting: function() { },
@@ -600,17 +600,17 @@ 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()
@@ -763,9 +763,9 @@ function closeInspectorAndNotifyDone()
         clearTimeout(window._watchDogTimer);
 
     testRunner.closeWebInspector();
-    setTimeout(function() {
+    requestAnimationFrame(function() {
         testRunner.notifyDone();
-    }, 0);
+    });
 }
 
 var outputElement;