SkTextBlob shader space workaround.

Blink would like drawTextBlob(x,y) to behave the same as drawText(x,y)
WRT shader space. Due to the current generic device base impl, that is
not the case.

This is a transitional workaround, pending proper drawTextBlob impls
in SkDevice classes.

R=reed@google.com, robertphillips@google.com

Author: fmalita@chromium.org

Review URL: https://codereview.chromium.org/586743002
3 files changed