Disable testGeolocationPref on chromeos
Disable testGeolocationPref on chromeos

The test uses chromedriver which doesn't work on chromeos yet.

R=krisr@chromium.org
BUG=chromium-os:19556
TEST=

Review URL: https://chromiumcodereview.appspot.com/9348035

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@121209 0039d316-1c4b-4281-b951-d872f2087c98

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