Bug 901198 Ensure safe browsing is enabled when running test_app_rep.js so that testing applications that don't enable it will pass as well. r=paolo,a=test-only

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extra : transplant_source : %EA%B5%5D%BFn%E9%D6b%ED%A9%7CS%D2%C5%1D%AD%97%87%A0%CB
Bug 900913 - Update talos to latest bits to capture xperf fix and other cleanup. r=edmorley, a=test-only