Fix testGeolocationInfobar for pyAuto.
Fix testGeolocationInfobar for pyAuto.

Test was failing due to browser crash when trying to click the Allow button when
when navigating to web site using self.GetFileURLForDataPath(). Changed to use self.GetHttpURLForDataPath
which fixes the test.

BUG=118958
TEST=none
Review URL: https://chromiumcodereview.appspot.com/9732011

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@127577 0039d316-1c4b-4281-b951-d872f2087c98

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