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

gm/tallstretchedbitmaps.cpp

 /*
  * Copyright 2014 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 "SkCanvas.h"
 #include "SkGradientShader.h"
 #include "SkPath.h"
 #include "SkRandom.h"
 
 int make_bm(SkBitmap* bm, int height) {
-    static const int kRadius = 22;
-    static const int kMargin = 8;
-    static const SkScalar kStartAngle = 0;
-    static const SkScalar kDAngle = 25;
-    static const SkScalar kSweep = 320;
-    static const SkScalar kThickness = 8;
+    constexpr int kRadius = 22;
+    constexpr int kMargin = 8;
+    constexpr SkScalar kStartAngle = 0;
+    constexpr SkScalar kDAngle = 25;
+    constexpr SkScalar kSweep = 320;
+    constexpr SkScalar kThickness = 8;
 
     int count = (height / (2 * kRadius + kMargin));
     height = count * (2 * kRadius + kMargin);
 
     bm->allocN32Pixels(2 * (kRadius + kMargin), height);
     SkRandom random;
 
     SkCanvas wholeCanvas(*bm);
     wholeCanvas.clear(0x00000000);
 
@@ skipping 66 matching lines @@
     struct {
         SkBitmap fBmp;
         int      fItemCnt;
     } fTallBmps[8];
     typedef skiagm::GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM(return new TallStretchedBitmapsGM;)