Fix <video> positioning for the MediaSource-based rendering
<video> must always be placed under the plugin, but it wasn't always
positioned properly. Moved video-container inside horizontally-centered div
so now video-container always occupies the same area as the <video> and the
plugin.
BUG=321825
Review URL: https://codereview.chromium.org/269793002
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@268005 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed
