remove imagefilter::sizeconstraint

src/effects/SkDisplacementMapEffect.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkDisplacementMapEffect.h"
 #include "SkDevice.h"
 #include "SkReadBuffer.h"
@@ skipping 410 matching lines @@
     GrTexture* color = colorBM.getTexture();
     GrTexture* displacement = displacementBM.getTexture();
     GrContext* context = color->getContext();
 
     GrSurfaceDesc desc;
     desc.fFlags = kRenderTarget_GrSurfaceFlag;
     desc.fWidth = bounds.width();
     desc.fHeight = bounds.height();
     desc.fConfig = kSkia8888_GrPixelConfig;
 
-    auto constraint = GrTextureProvider::FromImageFilter(ctx.sizeConstraint());
-    SkAutoTUnref<GrTexture> dst(context->textureProvider()->createTexture(desc, constraint));
+    SkAutoTUnref<GrTexture> dst(context->textureProvider()->createApproxTexture(desc));
 
     if (!dst) {
         return false;
     }
 
     SkVector scale = SkVector::Make(fScale, fScale);
     ctx.ctm().mapVectors(&scale, 1);
 
     GrPaint paint;
     SkMatrix offsetMatrix = GrCoordTransform::MakeDivByTextureWHMatrix(displacement);
@@ skipping 198 matching lines @@
                                        const GrGLSLCaps&, GrProcessorKeyBuilder* b) {
     const GrDisplacementMapEffect& displacementMap = proc.cast<GrDisplacementMapEffect>();
 
     uint32_t xKey = displacementMap.xChannelSelector();
     uint32_t yKey = displacementMap.yChannelSelector() << kChannelSelectorKeyBits;
 
     b->add32(xKey | yKey);
 }
 #endif