fix/test #1815 Excluding Google3MapProviderTestCase on IE 9 and Firefox 11
fix/test #1815 Excluding Google3MapProviderTestCase on IE 9 and Firefox 11

IE 9 and Firefox 11 are no longer supported by the Google Maps JS API.
cf https://developers.google.com/maps/documentation/javascript/browsersupport

The following exception is raised on unsupported browsers when running
this test:
"Error: The Google Maps JavaScript API does not support this browser."
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