Bug 787054 - Make the UA string OS agnostic again, use UserAgentOverrides.jsm to white-list sites that need "Android" [r=dao,gerv]

b2g/app/b2g.js

@@ -576,3 +576,7 @@ pref("browser.prompt.allowNative", false);
 // they are handled separately. This pref is only read once at startup:
 // a restart is required to enable a new value.
 pref("network.activity.blipIntervalMilliseconds", 250);
+
+// Send some sites a custom user-agent.
+pref("general.useragent.override.facebook.com", "\(Mobile#(Android; Mobile");
+pref("general.useragent.override.youtube.com", "\(Mobile#(Android; Mobile");

b2g/chrome/content/shell.js

@@ -24,6 +24,7 @@ Cu.import('resource://gre/modules/ObjectWrapper.jsm');
 Cu.import('resource://gre/modules/accessibility/AccessFu.jsm');
 Cu.import('resource://gre/modules/Payment.jsm');
 Cu.import("resource://gre/modules/AppsUtils.jsm");
+Cu.import('resource://gre/modules/UserAgentOverrides.jsm');
 
 XPCOMUtils.defineLazyServiceGetter(Services, 'env',
                                    '@mozilla.org/process/environment;1',
@@ -178,6 +179,7 @@ var shell = {
     CustomEventManager.init();
     WebappsHelper.init();
     AccessFu.attach(window);
+    UserAgentOverrides.init();
 
     // XXX could factor out into a settings->pref map.  Not worth it yet.
     SettingsListener.observe("debug.fps.enabled", false, function(value) {
@@ -213,6 +215,7 @@ var shell = {
 #ifndef MOZ_WIDGET_GONK
     delete Services.audioManager;
 #endif
+    UserAgentOverrides.uninit();
   },
 
   // If this key event actually represents a hardware button, filter it here

b2g/confvars.sh

@@ -8,6 +8,8 @@ MOZ_APP_VENDOR=Mozilla
 MOZ_APP_VERSION=18.0a1
 MOZ_APP_UA_NAME=Firefox
 
+MOZ_UA_OS_AGNOSTIC=1
+
 MOZ_B2G_VERSION=1.0.0
 
 MOZ_BRANDING_DIRECTORY=b2g/branding/unofficial