Fixed a corner case issue with printing XPS documents to the Microsoft XPS Document Writer which would not generate a job id.
Fixed a corner case issue with printing XPS documents to the Microsoft XPS Document Writer which would not generate a job id.

BUG=None
TEST=Test submitting an XPS document to the XPS Document Writer via cloud print.

Review URL: http://codereview.chromium.org/6544002

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@75333 0039d316-1c4b-4281-b951-d872f2087c98

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