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/GrTextureMaker.cpp b/src/gpu/GrTextureMaker.cpp
index 69e3a6e..44212fe 100644
--- a/src/gpu/GrTextureMaker.cpp
+++ b/src/gpu/GrTextureMaker.cpp
@@ -113,7 +113,7 @@
     SkASSERT(kTightCopy_DomainMode != domainMode);
     sk_sp<GrColorSpaceXform> colorSpaceXform = GrColorSpaceXform::Make(texColorSpace.get(),
                                                                        dstColorSpace);
-    return CreateFragmentProcessorForDomainAndFilter(fContext->resourceProvider(), std::move(proxy),
+    return CreateFragmentProcessorForDomainAndFilter(std::move(proxy),
                                                      std::move(colorSpaceXform),
                                                      adjustedMatrix, domainMode, domain,
                                                      filterOrNullForBicubic);