DevTools: Add support for inspector layout tests. Step 1.

webkit/glue/devtools/js/devtools.js

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview Tools is a main class that wires all components of the
  * DevTools frontend together. It is also responsible for overriding existing
  * WebInspector functionality while it is getting upstreamed into WebCore.
  */
 goog.provide('devtools.Tools');
@@ skipping 465 matching lines @@
 
 (function() {
 WebInspector.ElementsPanel.prototype._nodeSearchButtonClicked = function(
     event) {
   InspectorBackend.toggleNodeSearch();
   this.nodeSearchButton.toggled = !this.nodeSearchButton.toggled;
 };
 })();
 
 
+// We need to have a place for postponed tasks
+// which should be executed when all the messages between agent and frontend
+// are processed.
+
+WebInspector.runAfterPendingDispatchesQueue = [];
+
+WebInspector.runAfterPendingDispatches = function(callback) { 
+  this.runAfterPendingDispatchesQueue.push(callback); 
+};
+
+WebInspector.queuesAreEmpty = function() {
+  var copy = this.runAfterPendingDispatchesQueue.slice();
+  this.runAfterPendingDispatchesQueue = [];
+  for (var i = 0; i < copy.length; ++i) 
+    copy[i].call(this);
+};
+
 (function() {
 var originalAddToFrame = InspectorFrontendHost.addResourceSourceToFrame;
 InspectorFrontendHost.addResourceSourceToFrame = function(identifier, element) {
   var resource = WebInspector.resources[identifier];
   if (!resource) {
     return;
   }
   originalAddToFrame.call(this, identifier, resource.mimeType, element);
 };
 })();