diff -r 000000000000 -r 6474c204b198 testing/specialpowers/content/MockColorPicker.jsm
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/testing/specialpowers/content/MockColorPicker.jsm	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,125 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+this.EXPORTED_SYMBOLS = ["MockColorPicker"];
+
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+const Cm = Components.manager;
+const Cu = Components.utils;
+
+const CONTRACT_ID = "@mozilla.org/colorpicker;1";
+
+Cu.import("resource://gre/modules/Services.jsm");
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+
+var registrar = Cm.QueryInterface(Ci.nsIComponentRegistrar);
+var oldClassID = "", oldFactory = null;
+var newClassID = Cc["@mozilla.org/uuid-generator;1"].getService(Ci.nsIUUIDGenerator).generateUUID();
+var newFactory = function (window) {
+  return {
+    createInstance: function(aOuter, aIID) {
+      if (aOuter)
+        throw Components.results.NS_ERROR_NO_AGGREGATION;
+      return new MockColorPickerInstance(window).QueryInterface(aIID);
+    },
+    lockFactory: function(aLock) {
+      throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
+    },
+    QueryInterface: XPCOMUtils.generateQI([Ci.nsIFactory])
+  };
+}
+
+this.MockColorPicker = {
+  init: function(window) {
+    this.reset();
+    this.factory = newFactory(window);
+    if (!registrar.isCIDRegistered(newClassID)) {
+      try {
+        oldClassID = registrar.contractIDToCID(CONTRACT_ID);
+        oldFactory = Cm.getClassObject(Cc[CONTRACT_ID], Ci.nsIFactory);
+      } catch(ex) {
+        oldClassID = "";
+        oldFactory = null;
+        dump("TEST-INFO | can't get colorpicker registered component, " +
+             "assuming there is none");
+      }
+      if (oldClassID != "" && oldFactory != null) {
+        registrar.unregisterFactory(oldClassID, oldFactory);
+      }
+      registrar.registerFactory(newClassID, "", CONTRACT_ID, this.factory);
+    }
+  },
+
+  reset: function() {
+    this.returnColor = "";
+    this.showCallback = null;
+    this.shown = false;
+    this.showing = false;
+  },
+
+  cleanup: function() {
+    var previousFactory = this.factory;
+    this.reset();
+    this.factory = null;
+
+    registrar.unregisterFactory(newClassID, previousFactory);
+    if (oldClassID != "" && oldFactory != null) {
+      registrar.registerFactory(oldClassID, "", CONTRACT_ID, oldFactory);
+    }
+  }
+};
+
+function MockColorPickerInstance(window) {
+  this.window = window;
+};
+MockColorPickerInstance.prototype = {
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIColorPicker]),
+  init: function(aParent, aTitle, aInitialColor) {
+    this.parent = aParent;
+    this.initialColor = aInitialColor;
+  },
+  initialColor: "",
+  parent: null,
+  open: function(aColorPickerShownCallback) {
+    MockColorPicker.showing = true;
+    MockColorPicker.shown = true;
+
+    this.window.setTimeout(function() {
+      let result = "";
+      try {
+        if (typeof MockColorPicker.showCallback == "function") {
+          var updateCb = function(color) {
+            result = color;
+            aColorPickerShownCallback.update(color);
+          };
+          let returnColor = MockColorPicker.showCallback(this, updateCb);
+          if (typeof returnColor === "string") {
+            result = returnColor;
+          }
+        } else if (typeof MockColorPicker.returnColor === "string") {
+          result = MockColorPicker.returnColor;
+        }
+      } catch(ex) {
+        dump("TEST-UNEXPECTED-FAIL | Exception in MockColorPicker.jsm open() " +
+             "method: " + ex + "\n");
+      }
+      if (aColorPickerShownCallback) {
+        aColorPickerShownCallback.done(result);
+      }
+    }.bind(this), 0);
+  }
+};
+
+// Expose everything to content. We call reset() here so that all of the
+// relevant lazy expandos get added.
+MockColorPicker.reset();
+function exposeAll(obj) {
+  var props = {};
+  for (var prop in obj)
+    props[prop] = 'rw';
+  obj.__exposedProps__ = props;
+}
+exposeAll(MockColorPicker);
+exposeAll(MockColorPickerInstance.prototype);