Update GeSHi from upstream

Import e89ac0019e

https://github.com/GeSHi/geshi-1.0/tree/e89ac0019ed59f82b1ab1f51c8d68c3e4b5155f2

Bug: 52509
Change-Id: Ibff6c89e919230a952b0c9cd840ce6ce3e2bb02a
Merge "Update GeSHi from upstream"