PpapiThread should handle child process messages.

The current code overrides ChildThread::OnMessageReceived(), but doesn't handle child process messages.
One consequence is that we ignore the browser message to shut down ppapi processes.

With this CL, a ppapi process should be shut down when the plugin is not used by any tab for 30 seconds.

BUG=None
TEST=None


Review URL: https://chromiumcodereview.appspot.com/11633051

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@174718 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed