Use kLow_SkFilterQuality in DrawBitmapAABench

bench/DrawBitmapAABench.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "Benchmark.h"
 #include "SkCanvas.h"
 #include "SkMatrix.h"
 #include "SkPaint.h"
 #include "SkString.h"
 
 /**
  * This bench measures the rendering time of SkCanvas::drawBitmap with different anti-aliasing /
  * matrix combinations.
  */
 
 class DrawBitmapAABench : public Benchmark {
 public:
     DrawBitmapAABench(bool doAA, const SkMatrix& matrix, const char name[])
         : fMatrix(matrix)
         , fName("draw_bitmap_") {
 
         fPaint.setAntiAlias(doAA);
+        // Most clients use filtering, so let's focus on this for now.
+        fPaint.setFilterQuality(kLow_SkFilterQuality);
         fName.appendf("%s_%s", doAA ? "aa" : "noaa", name);
     }
 
 protected:
     const char* onGetName() override {
         return fName.c_str();
     }
 
     void onPreDraw() override {
         fBitmap.allocN32Pixels(200, 200);
@@ skipping 34 matching lines @@
 DEF_BENCH( return new DrawBitmapAABench(true, SkMatrix::MakeScale(1.17f), "scale"); )
 
 DEF_BENCH( return new DrawBitmapAABench(true, SkMatrix::MakeTrans(17.5f, 17.5f), "translate"); )
 
 DEF_BENCH(
     SkMatrix m;
     m.reset();
     m.preRotate(15);
     return new DrawBitmapAABench(true, m, "rotate");
 )