remove DownSample imagefilter

gm/imagefiltersbase.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 #include "SkCanvas.h"
 #include "SkColorFilter.h"
 #include "SkColorPriv.h"
 #include "SkShader.h"
 
 #include "SkBlurImageFilter.h"
 #include "SkColorFilterImageFilter.h"
 #include "SkDropShadowImageFilter.h"
 #include "SkSpecialImage.h"
-#include "SkTestImageFilters.h"
 
 class FailImageFilter : public SkImageFilter {
 public:
     class Registrar {
     public:
         Registrar() {
             SkFlattenable::Register("FailImageFilter",
                                     FailImageFilter::CreateProc,
                                     FailImageFilter::GetFlattenableType());
         }
@@ skipping 287 matching lines @@
 
 class ImageFiltersText_CF : public ImageFiltersTextBaseGM {
 public:
     ImageFiltersText_CF() : ImageFiltersTextBaseGM("color") {}
 
     void installFilter(SkPaint* paint) override {
         paint->setColorFilter(SkColorFilter::MakeModeFilter(SK_ColorBLUE, SkXfermode::kSrcIn_Mode));
     }
 };
 DEF_GM( return new ImageFiltersText_CF; )