Bug 797164 - Support chrome tests on b2g emulator; r=ahal

testing/mochitest/b2g_start_script.js

@@ -6,6 +6,7 @@ let outOfProcess = __marionetteParams[0]
 let mochitestUrl = __marionetteParams[1]
 let onDevice = __marionetteParams[2]
 let wifiSettings = __marionetteParams[3]
+let chrome = __marionetteParams[4]
 let prefs = Components.classes["@mozilla.org/preferences-service;1"].
                             getService(Components.interfaces.nsIPrefBranch)
 let settings = window.navigator.mozSettings;
@@ -86,6 +87,11 @@ if (outOfProcess) {
   mm.loadFrameScript("data:,(" + encodeURI(contentScript.toSource()) + ")();", true);
 }
 
+if (chrome) {
+  let loader = Cc["@mozilla.org/moz/jssubscript-loader;1"].getService(Ci.mozIJSSubScriptLoader);
+  loader.loadSubScript("chrome://mochikit/content/browser-test.js");
+  b2gStart();
+}
 
 if (onDevice) {
   var cpuLock = Cc["@mozilla.org/power/powermanagerservice;1"]
@@ -133,5 +139,7 @@ if (onDevice) {
     };
   }
 } else {
-  container.src = mochitestUrl;
+  if (!chrome) {
+    container.src = mochitestUrl;
+  }
 }

testing/mochitest/browser-test.js

@@ -5,7 +5,11 @@ var gConfig;
 
 if (Cc === undefined) {
   var Cc = Components.classes;
+}
+if (Ci === undefined) {
   var Ci = Components.interfaces;
+}
+if (Cu === undefined) {
   var Cu = Components.utils;
 }
 
@@ -32,6 +36,15 @@ window.addEventListener("load", function testOnLoad() {
   });
 });
 
+function b2gStart() {
+  let homescreen = document.getElementById('systemapp');
+  var webNav = homescreen.contentWindow.QueryInterface(Ci.nsIInterfaceRequestor)
+                                   .getInterface(Ci.nsIWebNavigation);
+  var url = "chrome://mochikit/content/harness.xul?manifestFile=tests.json";
+
+  webNav.loadURI(url, null, null, null, null);
+}
+
 function testInit() {
   gConfig = readConfig();
   if (gConfig.testRoot == "browser" ||

testing/mochitest/runtestsb2g.py

@@ -174,6 +174,7 @@ class B2GMochitest(MochitestUtilsMixin):
             self.buildURLOptions(options, {'MOZ_HIDE_RESULTS_TABLE': '1'})
             self.test_script_args.append(not options.emulator)
             self.test_script_args.append(options.wifi)
+            self.test_script_args.append(options.chrome)
 
 
             self.runner.start(outputTimeout=timeout)