Initialize SkPixelRef::fInfo.

Still will need to make subclasses call the version of the constructor
that initializes fInfo properly.

R=reed@google.com

Review URL: https://codereview.chromium.org/110843006

git-svn-id: http://skia.googlecode.com/svn/trunk@12639 2bbb7eff-a529-9590-31e7-b0007b416f81
2 files changed