DevTools: fix inspector/elements/css-rule-hover-highlights-selectors.html

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 56 matching lines @@
     var expression = "testRunner.evaluateInWebInspectorOverlay(\"(\" + " + func + " + \")()\")";
     var mainContext = InspectorTest.runtimeModel.executionContexts()[0];
     mainContext.evaluate(expression, "", false, false, true, false, false, wrapCallback);
 
     function wrapCallback(val, err, result)
     {
         callback(result.value)
     }
 }
 
+InspectorTest.waitForOverlayRepaint = function(callback)
+{
+    InspectorTest.invokePageFunctionAsync("requestAnimationFrame", callback);
+}
+
 var lastEvalId = 0;
 var pendingEvalRequests = {};
 
 var lastPromiseEvalId = 0;
 var pendingPromiseEvalRequests = {};
 
 /**
  * The given function should take two callback paraters before the arguments:
  *  * resolve - called when successful (with optional result)
  *  * reject  - called when there was a failure (with optional error)
@@ skipping 1126 matching lines @@
     _output("[page] " + text);
 }
 
 function _output(result)
 {
     if (!outputElement)
         createOutputElement();
     outputElement.appendChild(document.createTextNode(result));
     outputElement.appendChild(document.createElement("br"));
 }