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I named it o3djs.DestinationBuffer because it has nothing to do 
with O3D. It's purely part of our sample serialization example.

Review URL: http://codereview.chromium.org/149236

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@20013 0039d316-1c4b-4281-b951-d872f2087c98