Try to fix GeolocationProviderTest flakiness

Make the GeolocationProviderTest family of tests wait until the
geolocation thread has finished cleaning up during teardown. This
should fix the flakines (*should*, not *will* because I am unable
to reproduce the flakiness myself...).

BUG=126421
TEST=content_unittest GeolocationProviderTest.*


Review URL: https://chromiumcodereview.appspot.com/10382036

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@136063 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed