Revert of make gm background colors 565 compatible

gm/blurs.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 "SkBlurMask.h"
 #include "SkBlurMaskFilter.h"
 
 class BlursGM : public skiagm::GM {
 public:
     BlursGM() {
-        this->setBGColor(sk_tool_utils::color_to_565(0xFFDDDDDD));
+        this->setBGColor(0xFFDDDDDD);
     }
 
 protected:
 
     SkString onShortName() override {
         return SkString("blurs");
     }
 
     SkISize onISize() override {
         return SkISize::Make(700, 500);
@@ skipping 131 matching lines @@
         canvas->translate(dx, 0);
         canvas->drawPath(path, paint);
 
         // Translate to outside of clip bounds.
         canvas->translate(-dx, 0);
         canvas->translate(-30, -150);
         canvas->drawPath(path, paint);
     }
 };
 DEF_GM( return new Blur2RectsNonNinePatchGM; )