tree 57c3788b3a6257f7353cf31729617a90b8dfe488
parent 70a85687b5fae5a28bc786aa5729e87202447fa3
author Fabrice Di Meglio <fdimeglio@google.com> 1316470676 -0700
committer Fabrice Di Meglio <fdimeglio@google.com> 1316660567 -0700

Fix bug #5332081 TextLayoutCache needs to be able to have more cache hits

- makes TextLayoutCache not carring about start/count. Basically he will cache the result for
the full string and gives back the "chunk" corresponding to start/count
- changed the TextLayoutCacheValue API to take start/count parameters
- add Harfbuzz LogClusters in TextLayoutCacheValue as it is needed for extracting the start/count "chunk"

Change-Id: I4b38a4442428606de9a093303bbbe98181e1f89c