Split drawing functionality out of GrContext and into new GrDrawContext
This is mainly a mechanical CL. There were some fiddly bits in GrContext.cpp where it no longer had access to the GrDrawTarget (and had to use the new GrDrawContext).
I've converted GrAARectRenderer & GrOvalRenderer into static classes so I could stop allocating them.
Review URL: https://codereview.chromium.org/1151283004
diff --git a/src/gpu/SkGpuDevice.h b/src/gpu/SkGpuDevice.h
index c1ea4fe..1356a6f 100644
--- a/src/gpu/SkGpuDevice.h
+++ b/src/gpu/SkGpuDevice.h
@@ -151,6 +151,7 @@
SkIPoint fClipOrigin;
GrClip fClip;
GrTextContext* fTextContext;
+ SkAutoTUnref<GrDrawContext> fDrawContext;
SkSurfaceProps fSurfaceProps;
GrRenderTarget* fRenderTarget;
// remove when our clients don't rely on accessBitmap()