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

src/effects/SkPaintImageFilter.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkPaintImageFilter.h"
 #include "SkCanvas.h"
 #include "SkReadBuffer.h"
@@ skipping 25 matching lines @@
 
 sk_sp<SkSpecialImage> SkPaintImageFilter::onFilterImage(SkSpecialImage* source,
                                                         const Context& ctx,
                                                         SkIPoint* offset) const {
     SkIRect bounds;
     const SkIRect srcBounds = SkIRect::MakeWH(source->width(), source->height());
     if (!this->applyCropRect(ctx, srcBounds, &bounds)) {
         return nullptr;
     }
 
-    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);
 
     SkMatrix matrix(ctx.ctm());
@@ skipping 15 matching lines @@
     return true;
 }
 
 #ifndef SK_IGNORE_TO_STRING
 void SkPaintImageFilter::toString(SkString* str) const {
     str->appendf("SkPaintImageFilter: (");
     fPaint.toString(str);
     str->append(")");
 }
 #endif