Revert of make drawText calls non-virtual, to ease SkFont and TextBlob

Revert of make drawText calls non-virtual, to ease SkFont and TextBlob (https://codereview.chromium.org/243853006/)

Reason for revert:
need to test more the code-path where we don't opt into the new virtuals

Original issue's description:
> make drawText calls non-virtual, to ease SkFont and TextBlob
> 
> BUG=skia:
> 
> Committed: http://code.google.com/p/skia/source/detail?r=14307

TBR=robertphillips@google.com
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Committed: http://code.google.com/p/skia/source/detail?r=14314

[reed1, 2014-04-22 20:06:36]

Created Revert of make drawText calls non-virtual, to ease SkFont and TextBlob

[commit-bot: I haz the power, 2014-04-22 20:06:56]

CQ is trying da patch. Follow status at
https://skia-tree-status.appspot.com/cq/reed@google.com/247983003/1

[commit-bot: I haz the power, 2014-04-22 20:07:53]

Change committed as 14314