spin off easy stuff from Herb's windows GN CL

gm/circles.cpp

 /*
  * Copyright 2012 Intel 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 "SkBlurDrawLooper.h"
 #include "SkBlurMask.h"
 #include "SkBlurMaskFilter.h"
+#include "SkColorFilter.h"
 #include "SkGradientShader.h"
 #include "SkMatrix.h"
 #include "SkRandom.h"
 #include "SkTArray.h"
 
 namespace skiagm {
 
 class CircleGM : public GM {
 public:
     CircleGM() {
@@ skipping 179 matching lines @@
     SkTArray<SkPaint> fPaints;
     SkTArray<SkMatrix> fMatrices;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new CircleGM; }
 static GMRegistry reg(MyFactory);
 
 }