Update SkMergeImageFilter to sk_sp

src/core/SkMatrixImageFilter.cpp

 /*
  * Copyright 2014 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 "SkMatrixImageFilter.h"
 #include "SkBitmap.h"
 #include "SkCanvas.h"
@@ skipping 16 matching lines @@
                                                  SkFilterQuality filterQuality,
                                                  SkImageFilter* input) {
     return new SkMatrixImageFilter(transform, filterQuality, input);
 }
 
 SkFlattenable* SkMatrixImageFilter::CreateProc(SkReadBuffer& buffer) {
     SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
     SkMatrix matrix;
     buffer.readMatrix(&matrix);
     SkFilterQuality quality = static_cast<SkFilterQuality>(buffer.readInt());
-    return Create(matrix, quality, common.getInput(0));
+    return Create(matrix, quality, common.getInput(0).get());
 }
 
 void SkMatrixImageFilter::flatten(SkWriteBuffer& buffer) const {
     this->INHERITED::flatten(buffer);
     buffer.writeMatrix(fTransform);
     buffer.writeInt(fFilterQuality);
 }
 
 SkMatrixImageFilter::~SkMatrixImageFilter() {
 }
@@ skipping 87 matching lines @@
                  fTransform[SkMatrix::kMPersp2]);
 
     str->append("<dt>FilterLevel:</dt><dd>");
     static const char* gFilterLevelStrings[] = { "None", "Low", "Medium", "High" };
     str->append(gFilterLevelStrings[fFilterQuality]);
     str->append("</dd>");
 
     str->appendf(")");
 }
 #endif