tunnel down texture-size-constraint to imagefilters

src/image/SkImage.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmap.h"
 #include "SkBitmapCache.h"
 #include "SkCanvas.h"
@@ skipping 98 matching lines @@
     SkBitmap src;
     if (!this->getROPixels(&src)) {
         return nullptr;
     }
 
     const SkIRect srcBounds = SkIRect::MakeWH(this->width(), this->height());
 
     if (forceResultToOriginalSize) {
         const SkIRect clipBounds = srcBounds;
         SkRasterImageFilterProxy proxy;
-        SkImageFilter::Context ctx(SkMatrix::I(), clipBounds, SkImageFilter::Cache::Get());
+        SkImageFilter::Context ctx(SkMatrix::I(), clipBounds, SkImageFilter::Cache::Get(),
+                                   SkImageFilter::kExact_SizeConstraint);
 
         SkBitmap dst;
         if (filter->filterImage(&proxy, src, ctx, &dst, offsetResult)) {
             dst.setImmutable();
             return SkImage::NewFromBitmap(dst);
         }
     } else {
         const SkIRect dstR = compute_fast_ibounds(filter, srcBounds);
 
         SkImageInfo info = SkImageInfo::MakeN32Premul(dstR.width(), dstR.height());
@@ skipping 265 matching lines @@
 
 SkImage* SkImage::NewFromAdoptedTexture(GrContext*, const GrBackendTextureDesc&, SkAlphaType) {
     return nullptr;
 }
 
 SkImage* SkImage::NewFromTextureCopy(GrContext*, const GrBackendTextureDesc&, SkAlphaType) {
     return nullptr;
 }
 
 #endif