crosswalk-project/crosswalk — pull request #1219 by yinli (2013-11-29 08:54:20+00:00)
Title: RuntimeContext must be destructed explicitly

When MessageLoop is stopped, runtime_context_ must be set to null.
It will call RuntimeContext destruction method, which happened on
MainThread. It blocked download_browsertest.

BUG=https://crosswalk-project.org/jira/browse/XWALK-408