Revert of Revert of make gm background colors 565 compatible

gm/drawlooper.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"
 #include "SkCanvas.h"
 #include "SkGraphics.h"
 #include "SkLayerDrawLooper.h"
 #include "SkRandom.h"
 
 #define WIDTH   200
 #define HEIGHT  200
 
 class DrawLooperGM : public skiagm::GM {
 public:
     DrawLooperGM() : fLooper(NULL) {
-        this->setBGColor(0xFFDDDDDD);
+        this->setBGColor(sk_tool_utils::color_to_565(0xFFDDDDDD));
     }
 
     virtual ~DrawLooperGM() {
         SkSafeUnref(fLooper);
     }
 
 protected:
     virtual SkISize onISize() override {
         return SkISize::Make(520, 160);
     }
@@ skipping 61 matching lines @@
         fLooper = looperBuilder.detachLooper();
     }
 
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static skiagm::GM* MyFactory(void*) { return new DrawLooperGM; }
 static skiagm::GMRegistry reg(MyFactory);