Revert of Revert of make gm background colors 565 compatible

gm/gradients_no_texture.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"
 
 using namespace skiagm;
@@ skipping 63 matching lines @@
 
 static const GradMaker gGradMakers[] = {
     MakeLinear, MakeRadial, MakeSweep, Make2Radial, Make2Conical,
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 class GradientsNoTextureGM : public GM {
 public:
     GradientsNoTextureGM() {
-        this->setBGColor(0xFFDDDDDD);
+        this->setBGColor(sk_tool_utils::color_to_565(0xFFDDDDDD));
     }
 
 protected:
 
     SkString onShortName() override { return SkString("gradients_no_texture"); }
     SkISize onISize() override { return SkISize::Make(640, 615); }
 
     void onDraw(SkCanvas* canvas) override {
         static const SkPoint kPts[2] = { { 0, 0 },
                                          { SkIntToScalar(50), SkIntToScalar(50) } };
@@ skipping 148 matching lines @@
     }
 
 private:
     typedef GM INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 DEF_GM( return SkNEW(GradientsNoTextureGM));
 DEF_GM( return SkNEW(GradientsManyColorsGM));