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/GrYUVProvider.cpp b/src/gpu/GrYUVProvider.cpp
index 6b51303..5ab926b 100644
--- a/src/gpu/GrYUVProvider.cpp
+++ b/src/gpu/GrYUVProvider.cpp
@@ -132,8 +132,7 @@
 
     GrPaint paint;
     sk_sp<GrFragmentProcessor> yuvToRgbProcessor(
-        GrYUVEffect::MakeYUVToRGB(ctx->resourceProvider(),
-                                  yuvTextureContexts[0]->asTextureProxyRef(),
+        GrYUVEffect::MakeYUVToRGB(yuvTextureContexts[0]->asTextureProxyRef(),
                                   yuvTextureContexts[1]->asTextureProxyRef(),
                                   yuvTextureContexts[2]->asTextureProxyRef(),
                                   yuvInfo.fSizeInfo.fSizes, yuvInfo.fColorSpace, false));