Bug 1567341 - Properly initialize GeckoView in xpcshell-test. r=jmaher

Differential Revision: https://phabricator.services.mozilla.com/D106202

testing/xpcshell/head.js

@@ -503,6 +503,16 @@ function _initDebugging(port) {
 }
 
 function _execute_test() {
+  if (runningInParent && _AppConstants.platform == "android") {
+    _Services.obs.notifyObservers(null, "profile-after-change");
+    // Wake up GeckoViewStartup
+    let geckoViewStartup = Cc["@mozilla.org/geckoview/startup;1"].getService(
+      Ci.nsIObserver
+    );
+    geckoViewStartup.observe(null, "profile-after-change", null);
+    geckoViewStartup.observe(null, "app-startup", null);
+  }
+
   // _JSDEBUGGER_PORT is dynamically defined by <runxpcshelltests.py>.
   if (_JSDEBUGGER_PORT) {
     try {