Minor fixes for distance field fonts:
- Remove additional transform in drawpostext()
- Use bitmap fonts if rasterizer set in paint
- Correctly set scale ratio for drawtext()

R=bsalomon@google.com

Author: jvanverth@google.com

Review URL: https://codereview.chromium.org/79283004

git-svn-id: http://skia.googlecode.com/svn/trunk/src@12338 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed