Fix NaCl download progress events for zipped Nexes. BUG=100950 TEST=manual Review URL: http://codereview.chromium.org/8357022
Fix NaCl download progress events for zipped Nexes.
BUG=100950
TEST=manual
Review URL: http://codereview.chromium.org/8357022

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@106585 0039d316-1c4b-4281-b951-d872f2087c98

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