GPU Font Cache improvements:
- If a strike has multiple atlases, check all for room for a new glyph
- Mark remaining atlases unused after a purge, then check for an unused
atlas before purging (reduces TextContext flushes and ghosting)
- Hide Atlas management a little better inside AtlasMgr
R=robertphillips@google.com, bsalomon@google.com
Author: jvanverth@google.com
Review URL: https://chromiumcodereview.appspot.com/21594005
git-svn-id: http://skia.googlecode.com/svn/trunk@10544 2bbb7eff-a529-9590-31e7-b0007b416f81
5 files changed