Updates to "Displaying Bitmaps Efficiently" class.
Changes:
 -Updated code sample (see http://ag/214812)
 -Updated code snippets to match updated sample
 -Fixed <> in code snippets
 -Updated disk cache section
 -Some other minor updates

Change-Id: Id7ca4d161f165814d71f238f940b2c5bfbc220aa
5 files changed