Replace a lot of 'static const' with 'constexpr' or 'const'.

gm/strokes.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 "SkPath.h"
 #include "SkRandom.h"
 #include "SkDashPathEffect.h"
 #include "SkParsePath.h"
 
 #define W   400
 #define H   400
 #define N   50
 
-static const SkScalar SW = SkIntToScalar(W);
-static const SkScalar SH = SkIntToScalar(H);
+constexpr SkScalar SW = SkIntToScalar(W);
+constexpr SkScalar SH = SkIntToScalar(H);
 
 static void rnd_rect(SkRect* r, SkPaint* paint, SkRandom& rand) {
     SkScalar x = rand.nextUScalar1() * W;
     SkScalar y = rand.nextUScalar1() * H;
     SkScalar w = rand.nextUScalar1() * (W >> 2);
     SkScalar h = rand.nextUScalar1() * (H >> 2);
     SkScalar hoffset = rand.nextSScalar1();
     SkScalar woffset = rand.nextSScalar1();
 
     r->set(x, y, x + w, y + h);
@@ skipping 480 matching lines @@
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM( return new StrokesGM; )
 DEF_GM( return new Strokes2GM; )
 DEF_GM( return new Strokes3GM; )
 DEF_GM( return new Strokes4GM; )
 DEF_GM( return new Strokes5GM; )
 
 DEF_GM( return new ZeroLenStrokesGM; )
 DEF_GM( return new TeenyStrokesGM; )