Roll xdg-utils to latest revision for registerProtocolHandler support.
Roll xdg-utils to latest revision for registerProtocolHandler support.

Brings in upstream changes and also changes to support registering Chrome
as the default handelr for specific URL schemes, in support of
registerProtocolHandler

BUG=83557
TEST=Manual testing needed on different Linux distrubutions

Review URL: http://codereview.chromium.org/7471025

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@93354 0039d316-1c4b-4281-b951-d872f2087c98

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