Implement unittests for IBusEngineService

BUG=126947
TEST=chromeos_unittests and try bots

Review URL: https://chromiumcodereview.appspot.com/10806028

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@148068 0039d316-1c4b-4281-b951-d872f2087c98

chromeos/chromeos.gyp

@@ -236,11 +236,12 @@
         'dbus/ibus/ibus_client_unittest.cc',
         'dbus/ibus/ibus_component_unittest.cc',
         'dbus/ibus/ibus_engine_factory_service_unittest.cc',
+        'dbus/ibus/ibus_engine_service_unittest.cc',
+        'dbus/ibus/ibus_input_context_client_unittest.cc',
         'dbus/ibus/ibus_lookup_table_unittest.cc',
         'dbus/ibus/ibus_object_unittest.cc',
         'dbus/ibus/ibus_property_unittest.cc',
         'dbus/ibus/ibus_text_unittest.cc',
-        'dbus/ibus/ibus_input_context_client_unittest.cc',
         'dbus/introspectable_client_unittest.cc',
         'dbus/modem_messaging_client_unittest.cc',
         'network/network_sms_handler_unittest.cc',