Another fix for drawing bitmaps through an SkGPipe that share pixelrefs.

In addition to checking the offset, also check to ensure that the width
and height match, so that a subset which includes the upper left corner
will be handled properly as well.

Review URL: https://codereview.appspot.com/6352066

git-svn-id: http://skia.googlecode.com/svn/trunk@4448 2bbb7eff-a529-9590-31e7-b0007b416f81
2 files changed