make tests portable by using 565 compatible colors

gm/matriximagefilter.cpp

 /*
  * Copyright 2014 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 "SkColor.h"
 #include "SkImageFilter.h"
@@ skipping 23 matching lines @@
     }
 
     virtual SkISize onISize() {
         return SkISize::Make(420, 100);
     }
 
     void make_checkerboard(SkBitmap* bitmap) {
         bitmap->allocN32Pixels(64, 64);
         SkCanvas canvas(*bitmap);
         SkPaint darkPaint;
-        darkPaint.setColor(0xFF404040);
+        darkPaint.setColor(sk_tool_utils::color_to_565(0xFF404040));
         SkPaint lightPaint;
-        lightPaint.setColor(0xFFA0A0A0);
+        lightPaint.setColor(sk_tool_utils::color_to_565(0xFFA0A0A0));
         for (int y = 0; y < 64; y += 32) {
             for (int x = 0; x < 64; x += 32) {
                 canvas.save();
                 canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
                 canvas.drawRect(SkRect::MakeXYWH(0, 0, 16, 16), darkPaint);
                 canvas.drawRect(SkRect::MakeXYWH(16, 0, 16, 16), lightPaint);
                 canvas.drawRect(SkRect::MakeXYWH(0, 16, 16, 16), lightPaint);
                 canvas.drawRect(SkRect::MakeXYWH(16, 16, 16, 16), darkPaint);
                 canvas.restore();
             }
@@ skipping 29 matching lines @@
 private:
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new MatrixImageFilterGM; }
 static GMRegistry reg(MyFactory);
 
 }