am aa98d509: am 6525f7bf: Merge "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 update

* commit 'aa98d509500ba963f9dcda55073f312ee643cb46':
  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