Some cleanup in GrTextureProvider and GrResourceProvider

src/effects/SkGpuBlurUtils.cpp

Index: src/effects/SkGpuBlurUtils.cpp
diff --git a/src/effects/SkGpuBlurUtils.cpp b/src/effects/SkGpuBlurUtils.cpp
index 401057b24b8754412dbaf80e6ee16f76e4e5c019..7c239a1bc34333a9307eec2a7bf4d620129ce7e2 100644
--- a/src/effects/SkGpuBlurUtils.cpp
+++ b/src/effects/SkGpuBlurUtils.cpp
@@ -183,14 +183,12 @@ GrTexture* GaussianBlur(GrContext* context,
     GrTexture* tempTexture;
     SkAutoTUnref<GrTexture> temp1, temp2;
 
-    temp1.reset(context->textureProvider()->refScratchTexture(
-        desc, GrTextureProvider::kApprox_ScratchTexMatch));
+    temp1.reset(context->textureProvider()->createApproxTexture(desc));
     dstTexture = temp1.get();
     if (canClobberSrc) {
         tempTexture = srcTexture;
     } else {
-        temp2.reset(context->textureProvider()->refScratchTexture(
-            desc, GrTextureProvider::kApprox_ScratchTexMatch));
+        temp2.reset(context->textureProvider()->createApproxTexture(desc));
         tempTexture = temp2.get();
     }