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

gm/stringart.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 "SkAnimTimer.h"
 #include "SkCanvas.h"
 #include "SkPath.h"
 
 // Reproduces https://code.google.com/p/chromium/issues/detail?id=279014
 
-static const int kWidth = 440;
-static const int kHeight = 440;
-static const SkScalar kAngle = 0.305f;
-static const int kMaxNumSteps = 140;
+constexpr int kWidth = 440;
+constexpr int kHeight = 440;
+constexpr SkScalar kAngle = 0.305f;
+constexpr int kMaxNumSteps = 140;
 
 // Renders a string art shape.
 // The particular shape rendered can be controlled by adjusting kAngle, from 0 to 1
 
 class StringArtGM : public skiagm::GM {
 public:
     StringArtGM() : fNumSteps(kMaxNumSteps) {}
 
 protected:
 
@@ skipping 25 matching lines @@
 
         SkPaint paint;
         paint.setAntiAlias(true);
         paint.setStyle(SkPaint::kStroke_Style);
         paint.setColor(sk_tool_utils::color_to_565(0xFF007700));
 
         canvas->drawPath(path, paint);
     }
 
     bool onAnimate(const SkAnimTimer& timer) override {
-        static const SkScalar kDesiredDurationSecs = 3.0f;
+        constexpr SkScalar kDesiredDurationSecs = 3.0f;
 
         // Make the animation ping-pong back and forth but start in the fully drawn state
         SkScalar fraction = 1.0f - timer.scaled(2.0f/kDesiredDurationSecs, 2.0f);
         if (fraction <= 0.0f) {
             fraction = -fraction;
         }
 
         SkASSERT(fraction >= 0.0f && fraction <= 1.0f);
 
         fNumSteps = (int) (fraction * kMaxNumSteps);
         return true;
     }
 
 private:
     int fNumSteps;
 
     typedef GM INHERITED;
 };
 
 DEF_GM( return new StringArtGM; )