Bug 1352204 Fix test issues with non-MPC extensions r=kmag

Continue to allow non-multiprocessCompatible extensions in automation.
There are a ton of places that would need to be changed, many of which
will be changing soon anyway with the non-webextensions change in 57
so this is mostly the expedient route to keeping the tree green.

MozReview-Commit-ID: EZZoDVdhLfy

--HG--
extra : rebase_source : f83472bc1c88dd0deadbe485d9002499027ff07f

dom/plugins/test/testaddon/install.rdf

@@ -18,6 +18,7 @@
     </em:targetApplication>
 
     <em:unpack>true</em:unpack>
+    <em:multiprocessCompatible>true</em:multiprocessCompatible>
 
   </Description>
 </RDF>

layout/tools/reftest/reftest-preferences.js

@@ -20,6 +20,8 @@ user_pref("media.autoplay.enabled", true);
 user_pref("app.update.enabled", false);
 user_pref("app.update.staging.enabled", false);
 user_pref("app.update.url.android", "");
+// Ensure we can load the reftest extension
+user_pref("extensions.allow-non-mpc-extensions", true);
 // Disable addon updates and prefetching so we don't leak them
 user_pref("extensions.update.enabled", false);
 user_pref("extensions.systemAddon.update.url", "http://localhost/dummy-system-addons.xml");

testing/firefox-ui/tests/puppeteer/test_notifications.py

@@ -18,6 +18,7 @@ class TestNotifications(PuppeteerMixin, MarionetteTestCase):
         super(TestNotifications, self).setUp()
 
         self.marionette.set_pref('extensions.install.requireSecureOrigin', False)
+        self.marionette.set_pref('extensions.allow-non-mpc-extensions', True)
 
         self.addons_url = self.marionette.absolute_url('addons/extensions/')
         self.puppeteer.utils.permissions.add(self.marionette.baseurl, 'install')
@@ -25,6 +26,7 @@ class TestNotifications(PuppeteerMixin, MarionetteTestCase):
     def tearDown(self):
         try:
             self.marionette.clear_pref('extensions.install.requireSecureOrigin')
+            self.marionette.clear_pref('extensions.allow-non-mpc-extensions')
             self.marionette.clear_pref('xpinstall.signatures.required')
 
             self.puppeteer.utils.permissions.remove(self.addons_url, 'install')

testing/profiles/prefs_general.js

@@ -88,6 +88,7 @@ user_pref("extensions.installDistroAddons", false);
 // XPI extensions are required for test harnesses to load
 user_pref("extensions.defaultProviders.enabled", true);
 user_pref("xpinstall.signatures.required", false);
+user_pref("extensions.allow-non-mpc-extensions", true);
 
 user_pref("geo.wifi.uri", "http://%(server)s/tests/dom/tests/mochitest/geolocation/network_geolocation.sjs");
 user_pref("geo.wifi.timeToWaitBeforeSending", 2000);

testing/talos/talos/run_tests.py

@@ -120,6 +120,8 @@ def run_tests(config, browser_config):
     if browser_config['develop'] or browser_config['branch_name'] == 'Try':
         browser_config['preferences']['xpinstall.signatures.required'] = False
 
+    browser_config['preferences']['extensions.allow-non-mpc-extensions'] = True
+
     # set defaults
     testdate = config.get('testdate', '')
 

toolkit/components/telemetry/tests/unit/test_TelemetryEnvironment.js

@@ -853,6 +853,9 @@ add_task(function* setup() {
   // Spoof the the hotfixVersion
   Preferences.set("extensions.hotfix.lastVersion", APP_HOTFIX_VERSION);
 
+  // Allow non-multiprocessCompatible extensions
+  Preferences.set("extensions.allow-non-mpc-extensions", true);
+
   // Create the attribution data file, so that settings.attribution will exist.
   // The attribution functionality only exists in Firefox.
   if (AppConstants.MOZ_BUILD_APP == "browser") {

toolkit/mozapps/extensions/test/xpcshell/head_addons.js

@@ -23,6 +23,7 @@ const PREF_XPI_SIGNATURES_REQUIRED    = "xpinstall.signatures.required";
 const PREF_SYSTEM_ADDON_SET           = "extensions.systemAddonSet";
 const PREF_SYSTEM_ADDON_UPDATE_URL    = "extensions.systemAddon.update.url";
 const PREF_APP_UPDATE_ENABLED         = "app.update.enabled";
+const PREF_ALLOW_NON_MPC              = "extensions.allow-non-mpc-extensions";
 
 // Forcibly end the test if it runs longer than 15 minutes
 const TIMEOUT_MS = 900000;
@@ -1089,6 +1090,9 @@ Services.prefs.setCharPref(PREF_EM_MIN_COMPAT_PLATFORM_VERSION, "0");
 // Ensure signature checks are enabled by default
 Services.prefs.setBoolPref(PREF_XPI_SIGNATURES_REQUIRED, true);
 
+// Allow non-multiprocessCompatible extensions for now
+Services.prefs.setBoolPref(PREF_ALLOW_NON_MPC, true);
+
 
 // Copies blocklistFile (an nsIFile) to gProfD/blocklist.xml.
 function copyBlocklistToProfile(blocklistFile) {