Clean up GrResourceProvider usage

The only substantive changes are the removal of GrProxy instantiation in:

SkGpuBlurUtils::GaussianBlur
GrSimpleTextureEffect::Make*

Change-Id: I10970609693bd6ff5b3a3c21b41d82642bb277bc
Reviewed-on: https://skia-review.googlesource.com/19965
Reviewed-by: Greg Daniel <egdaniel@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/ops/GrAtlasTextOp.h b/src/gpu/ops/GrAtlasTextOp.h
index e0a4ed0..fcb3db1 100644
--- a/src/gpu/ops/GrAtlasTextOp.h
+++ b/src/gpu/ops/GrAtlasTextOp.h
@@ -148,8 +148,7 @@
     bool onCombineIfPossible(GrOp* t, const GrCaps& caps) override;
 
     // TODO just use class params
-    sk_sp<GrGeometryProcessor> setupDfProcessor(GrResourceProvider*,
-                                                const SkMatrix& viewMatrix, SkColor luminanceColor,
+    sk_sp<GrGeometryProcessor> setupDfProcessor(const SkMatrix& viewMatrix, SkColor luminanceColor,
                                                 GrColor color, sk_sp<GrTextureProxy> proxy) const;
 
     GrColor fColor;