stop using bitmap-filter flags outside of paint itself, as a step towards really changing them into…

gm/downsamplebitmap.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 "gm.h"
 #include "SkGradientShader.h"
 
@@ skipping 46 matching lines @@
 
         int curX = 0;
         int curWidth;
         float curScale = 1;
         do {
 
             SkMatrix matrix;
             matrix.setScale( curScale, curScale );
 
             SkPaint paint;
-            paint.setFilterBitmap(true);
-            paint.setFlags( paint.getFlags() | SkPaint::kHighQualityFilterBitmap_Flag );
+            paint.setFilterLevel(SkPaint::kHigh_FilterLevel);
 
             canvas->save();
             canvas->translate( (SkScalar) curX, 0.f );
             canvas->drawBitmapMatrix( fBM, matrix, &paint );
             canvas->restore();
 
             curWidth = (int) (fBM.width() * curScale + 2);
             curX += curWidth;
             curScale *= 0.75f;
         } while (curWidth >= 2 && curX < 4*fBM.width());
@@ skipping 113 matching lines @@
       }
   private:
       typedef DownsampleBitmapGM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM( return new DownsampleBitmapTextGM(72); )
 DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256); )
 DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png"); )