Remove SkImageFilter::getInputResult(), since its return value is not

src/effects/SkOffsetImageFilter.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 "SkOffsetImageFilter.h"
 #include "SkBitmap.h"
 #include "SkMatrix.h"
 #include "SkFlattenableBuffers.h"
 
 bool SkOffsetImageFilter::onFilterImage(Proxy* proxy, const SkBitmap& source,
                                         const SkMatrix& matrix,
                                         SkBitmap* result,
                                         SkIPoint* loc) {
-    SkBitmap src = this->getInputResult(0, proxy, source, matrix, loc);
+    SkBitmap src = source;
+    if (getInput(0) && !getInput(0)->filterImage(proxy, source, matrix, &src, loc)) {
+        return false;
+    }
+
     SkVector vec;
     matrix.mapVectors(&vec, &fOffset, 1);
 
     loc->fX += SkScalarRoundToInt(vec.fX);
     loc->fY += SkScalarRoundToInt(vec.fY);
     *result = src;
     return true;
 }
 
 bool SkOffsetImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm,
@@ skipping 12 matching lines @@
 }
 
 SkOffsetImageFilter::SkOffsetImageFilter(SkScalar dx, SkScalar dy,
                                          SkImageFilter* input) : INHERITED(input) {
     fOffset.set(dx, dy);
 }
 
 SkOffsetImageFilter::SkOffsetImageFilter(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {
     buffer.readPoint(&fOffset);
 }