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/shaders/gradients/SkGradientShader.cpp b/src/shaders/gradients/SkGradientShader.cpp
index 07860e4..9d4a250 100644
--- a/src/shaders/gradients/SkGradientShader.cpp
+++ b/src/shaders/gradients/SkGradientShader.cpp
@@ -1846,10 +1846,8 @@
             if (-1 != fRow) {
                 fYCoord = fAtlas->getYOffset(fRow)+SK_ScalarHalf*fAtlas->getNormalizedTexelHeight();
                 // This is 1/2 places where auto-normalization is disabled
-                fCoordTransform.reset(args.fContext->resourceProvider(), *args.fMatrix,
-                                      fAtlas->asTextureProxyRef().get(), false);
-                fTextureSampler.reset(args.fContext->resourceProvider(),
-                                      fAtlas->asTextureProxyRef(), params);
+                fCoordTransform.reset(*args.fMatrix, fAtlas->asTextureProxyRef().get(), false);
+                fTextureSampler.reset(fAtlas->asTextureProxyRef(), params);
             } else {
                 // In this instance we know the params are:
                 //   clampY, bilerp
@@ -1866,10 +1864,8 @@
                     return;
                 }
                 // This is 2/2 places where auto-normalization is disabled
-                fCoordTransform.reset(args.fContext->resourceProvider(), *args.fMatrix,
-                                      proxy.get(), false);
-                fTextureSampler.reset(args.fContext->resourceProvider(),
-                                      std::move(proxy), params);
+                fCoordTransform.reset(*args.fMatrix, proxy.get(), false);
+                fTextureSampler.reset(std::move(proxy), params);
                 fYCoord = SK_ScalarHalf;
             }