Create special surfaces according to original device (not always in N32)

src/effects/SkMergeImageFilter.cpp

 /*
  * Copyright 2012 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 "SkMergeImageFilter.h"
 
 #include "SkCanvas.h"
@@ skipping 95 matching lines @@
     // filter does not affect transparent black.
     bool embiggen = false;
     this->getCropRect().applyTo(bounds, ctx.ctm(), embiggen, &bounds);
     if (!bounds.intersect(ctx.clipBounds())) {
         return nullptr;
     }
 
     const int x0 = bounds.left();
     const int y0 = bounds.top();
 
-    SkImageInfo info = SkImageInfo::MakeN32(bounds.width(), bounds.height(),
-                                            kPremul_SkAlphaType);
-
-    sk_sp<SkSpecialSurface> surf(source->makeSurface(info));
+    sk_sp<SkSpecialSurface> surf(source->makeSurface(ctx.outputProperties(), bounds.size()));
     if (!surf) {
         return nullptr;
     }
 
     SkCanvas* canvas = surf->getCanvas();
     SkASSERT(canvas);
 
     canvas->clear(0x0);
 
     // Composite all of the filter inputs.
@@ skipping 58 matching lines @@
     for (int i = 0; i < this->countInputs(); ++i) {
         SkImageFilter* filter = this->getInput(i);
         str->appendf("%d: (", i);
         filter->toString(str);
         str->appendf(")");
     }
 
     str->append(")");
 }
 #endif