Pull cache out of GrContext

src/effects/SkAlphaThresholdFilter.cpp

Index: src/effects/SkAlphaThresholdFilter.cpp
diff --git a/src/effects/SkAlphaThresholdFilter.cpp b/src/effects/SkAlphaThresholdFilter.cpp
index b699498b3ab7244bcda87fe4d2cf631a17dc1378..70d195bfbd3253d57277d8b6e0b28b0198e462e4 100644
--- a/src/effects/SkAlphaThresholdFilter.cpp
+++ b/src/effects/SkAlphaThresholdFilter.cpp
@@ -278,8 +278,8 @@ bool SkAlphaThresholdFilterImpl::asFragmentProcessor(GrFragmentProcessor** fp,
         // the outside.
         maskDesc.fWidth = texture->width();
         maskDesc.fHeight = texture->height();
-        SkAutoTUnref<GrTexture> maskTexture(
-            context->refScratchTexture(maskDesc, GrContext::kApprox_ScratchTexMatch));
+        SkAutoTUnref<GrTexture> maskTexture(context->textureProvider()->refScratchTexture(
+            maskDesc, GrTextureProvider::kApprox_ScratchTexMatch));
         if (!maskTexture) {
             return false;
         }