Make SkGpuBlurUtils::GaussianBlur more drawContext centric

src/effects/SkBlurImageFilter.cpp

 /*
  * Copyright 2011 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBlurImageFilter.h"
 
 #include "SkAutoPixmapStorage.h"
@@ skipping 103 matching lines @@
             offset->fY = inputBounds.y();
             return input->makeSubset(inputBounds.makeOffset(-inputOffset.x(),
                                                             -inputOffset.y()));
         }
 
         offset->fX = dstBounds.fLeft;
         offset->fY = dstBounds.fTop;
         inputBounds.offset(-inputOffset);
         dstBounds.offset(-inputOffset);
         SkRect inputBoundsF(SkRect::Make(inputBounds));
-        sk_sp<GrTexture> tex(SkGpuBlurUtils::GaussianBlur(context,
-                                                          inputTexture.get(),
-                                                          source->props().isGammaCorrect(),
-                                                          SkRect::Make(dstBounds),
-                                                          &inputBoundsF,
-                                                          sigma.x(),
-                                                          sigma.y()));
-        if (!tex) {
+        sk_sp<GrDrawContext> drawContext(SkGpuBlurUtils::GaussianBlur(
+                                                                  context,
+                                                                  inputTexture.get(),
+                                                                  source->props().isGammaCorrect(),
+                                                                  SkRect::Make(dstBounds),
+                                                                  &inputBoundsF,
+                                                                  sigma.x(),
+                                                                  sigma.y()));
+        if (!drawContext) {
             return nullptr;
         }
 
         return SkSpecialImage::MakeFromGpu(SkIRect::MakeWH(dstBounds.width(), dstBounds.height()),
                                            kNeedNewImageUniqueID_SpecialImage,
-                                           std::move(tex), &source->props());
+                                           drawContext->asTexture(), &source->props());
     }
 #endif
 
     int kernelSizeX, kernelSizeX3, lowOffsetX, highOffsetX;
     int kernelSizeY, kernelSizeY3, lowOffsetY, highOffsetY;
     get_box3_params(sigma.x(), &kernelSizeX, &kernelSizeX3, &lowOffsetX, &highOffsetX);
     get_box3_params(sigma.y(), &kernelSizeY, &kernelSizeY3, &lowOffsetY, &highOffsetY);
 
     if (kernelSizeX < 0 || kernelSizeY < 0) {
         return nullptr;
@@ skipping 100 matching lines @@
     str->appendf("SkBlurImageFilter: (");
     str->appendf("sigma: (%f, %f) input (", fSigma.fWidth, fSigma.fHeight);
 
     if (this->getInput(0)) {
         this->getInput(0)->toString(str);
     }
 
     str->append("))");
 }
 #endif