Revert "Rebuild test history databases when starting up performance_ui_tests."

This reverts commit fd99334e881859262199c9b8a98f9fbb003b20e1.

BUG=111570

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@200312 0039d316-1c4b-4281-b951-d872f2087c98
41 files changed