Use only IJG decoding path to decode profile pictures on login screen

BUG=154369
TEST=browser_tests; manual: have PNG profile image, check that it is migrated after user has signed in.


Review URL: https://chromiumcodereview.appspot.com/13088002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@190679 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed