add filterTextFlags() to SkDevice (virtual) to allow device subclasses to
filter what text features we try to use. The filtering allows for implementation
limitations to dictate when we turn off certain text features.



git-svn-id: http://skia.googlecode.com/svn/trunk@943 2bbb7eff-a529-9590-31e7-b0007b416f81
6 files changed