Bug 940884 - 1/3: B2G SMS: Create MobileMessageDB.jsm for automation tests. r=khuey

--HG--
rename : dom/mobilemessage/src/gonk/MobileMessageDatabaseService.js => dom/mobilemessage/src/gonk/MobileMessageDB.jsm

dom/mobilemessage/src/moz.build

@@ -22,6 +22,7 @@ elif CONFIG['MOZ_WIDGET_TOOLKIT'] == 'gonk' and CONFIG['MOZ_B2G_RIL']:
     EXTRA_JS_MODULES = [
         'gonk/mms_consts.js',
         'gonk/MmsPduHelper.jsm',
+        'gonk/MobileMessageDB.jsm',
         'gonk/wap_consts.js',
         'gonk/WspPduHelper.jsm',
     ]