Update SkMergeImageFilter to sk_sp

src/effects/SkTileImageFilter.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 "SkTileImageFilter.h"
 #include "SkBitmap.h"
 #include "SkCanvas.h"
@@ skipping 109 matching lines @@
 
 SkRect SkTileImageFilter::computeFastBounds(const SkRect& src) const {
     return fDstRect;
 }
 
 SkFlattenable* SkTileImageFilter::CreateProc(SkReadBuffer& buffer) {
     SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
     SkRect src, dst;
     buffer.readRect(&src);
     buffer.readRect(&dst);
-    return Create(src, dst, common.getInput(0));
+    return Create(src, dst, common.getInput(0).get());
 }
 
 void SkTileImageFilter::flatten(SkWriteBuffer& buffer) const {
     this->INHERITED::flatten(buffer);
     buffer.writeRect(fSrcRect);
     buffer.writeRect(fDstRect);
 }
 
 #ifndef SK_IGNORE_TO_STRING
 void SkTileImageFilter::toString(SkString* str) const {
     str->appendf("SkTileImageFilter: (");
     str->appendf("src: %.2f %.2f %.2f %.2f",
                  fSrcRect.fLeft, fSrcRect.fTop, fSrcRect.fRight, fSrcRect.fBottom);
     str->appendf(" dst: %.2f %.2f %.2f %.2f",
                  fDstRect.fLeft, fDstRect.fTop, fDstRect.fRight, fDstRect.fBottom);
     if (this->getInput(0)) {
         str->appendf("input: (");
         this->getInput(0)->toString(str);
         str->appendf(")");
     }
     str->append(")");
 }
 #endif