Squashed commit of the following:

commit ed615e2803839ef28e0eab50d17844c207083ad6
Author: Andreas Huber <andih@google.com>
Date:   Fri Mar 18 12:38:30 2011 -0700

    Support for live streaming of webm content over http.

    Change-Id: Ie9ebd23d2c44d192d348b9fa3f3a0f3f28ac9e4c

commit 9c50b1392471a3d652b4a875c823bee854f8855b
Author: Andreas Huber <andih@google.com>
Date:   Thu Mar 17 13:33:22 2011 -0700

    Upgrade to the latest version of libwebm.

    Change-Id: Ic7965dda84131a38f9d3c72b6acd2025ace939ce

Change-Id: I3c993a89f749f05741594ef0ea47864e17ee783b