Revert of Implement text rendering with NVPR (https://codereview.chromium.org/196133014/)

Reason for revert:
This probably caused Win8 test bot fail during gm run:

http://108.170.217.252:10117/builders/Test-Win8-ShuttleA-GTX660-x86-Debug/builds/574

I can not identify any errors from the logs, so maybe it hung or something?

Original issue's description:
> Implement text rendering with NVPR
>
> Use path rendering to render the text from outlines if supported by the
> GPU. Implement this in GrStencilAndCoverTextContext by copying large
> chunks of code from GrBitmapTextContext (drawText) and
> GrDistanceFieldTextContext (drawPosText).
>
> The drawing is implemented with "instanced" path drawing
> functions.
>
> Moves the creation of the "main" text context from SkGpuDevice to the
> GrContext::createTextContext. This is done because the decision of which
> text renderer is optimal can be made only with the internal
> implementation-specific information of the context.
>
> Committed: http://code.google.com/p/skia/source/detail?r=13962

R=jvanverth@google.com, bsalomon@google.com, mtklein@google.com
TBR=bsalomon@google.com, jvanverth@google.com, mtklein@google.com
NOTREECHECKS=true
NOTRY=true

Author: kkinnunen@nvidia.com

Review URL: https://codereview.chromium.org/213123014

git-svn-id: http://skia.googlecode.com/svn/trunk@13963 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 0 insertions, 1 deletions

diff --git a/include/core/SkPaint.h b/include/core/SkPaint.h
index 38b77b92f5..7a647f0ea2 100644
--- a/include/core/SkPaint.h
+++ b/include/core/SkPaint.h
@@ -1144,7 +1144,6 @@ private:
     friend class SkPDFDevice;
     friend class GrBitmapTextContext;
     friend class GrDistanceFieldTextContext;
-    friend class GrStencilAndCoverTextContext;
     friend class SkTextToPathIter;
     friend class SkCanonicalizePaint;