Remove border from panels for Aura
Remove border from panels for Aura

Aura draws its own frame and shadow for top level windows. We will want to add support for rounded top corners for panels, but for now I think we can live with square corners.

BUG=106076
TEST=Panels on Aura should now have square corners with a standard aura window shadow behind them.


Review URL: http://codereview.chromium.org/9234046

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@119715 0039d316-1c4b-4281-b951-d872f2087c98

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