Image filters: refactor input GPU processing into filterInputGPU().

src/effects/SkBlurImageFilter.cpp

 /*
  * Copyright 2011 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 "SkBitmap.h"
 #include "SkBlurImageFilter.h"
 #include "SkColorPriv.h"
@@ skipping 176 matching lines @@
     }
     *dst = bounds;
     return true;
 }
 
 bool SkBlurImageFilter::filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context& ctx,
                                        SkBitmap* result, SkIPoint* offset) const {
 #if SK_SUPPORT_GPU
     SkBitmap input = src;
     SkIPoint srcOffset = SkIPoint::Make(0, 0);
-    if (this->getInput(0) &&
-        !this->getInput(0)->getInputResultGPU(proxy, src, ctx, &input, &srcOffset)) {
+    if (!this->filterInputGPU(0, proxy, src, ctx, &input, &srcOffset)) {
         return false;
     }
     SkIRect rect;
     if (!this->applyCropRect(ctx, proxy, input, &srcOffset, &rect, &input)) {
         return false;
     }
     GrTexture* source = input.getTexture();
     SkVector sigma = mapSigma(fSigma, ctx.ctm());
     offset->fX = rect.fLeft;
     offset->fY = rect.fTop;
@@ skipping 21 matching lines @@
     str->appendf("SkBlurImageFilter: (");
     str->appendf("sigma: (%f, %f) input (", fSigma.fWidth, fSigma.fHeight);
 
     if (this->getInput(0)) {
         this->getInput(0)->toString(str);
     }
 
     str->append("))");
 }
 #endif