Fix timeouts with search_engines tests
Fix timeouts with search_engines tests

The search_engines test when run in the google network might timeout because
of the invalid urls used.  Use localhost instead so that it goes fast.

BUG=64264
TEST=search_engines.py

Review URL: http://codereview.chromium.org/5832003

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@69299 0039d316-1c4b-4281-b951-d872f2087c98

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