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

gm/textblobrandomfont.cpp

 /*
  * Copyright 2015 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 "Resources.h"
@@ skipping 120 matching lines @@
             const char* text = "This test requires a surface";
             size_t len = strlen(text);
             SkPaint paint;
             canvas->drawText(text, len, 10, 100, paint);
         }
     }
 
 private:
     SkAutoTUnref<const SkTextBlob> fBlob;
 
-    static const int kWidth = 2000;
-    static const int kHeight = 1600;
+    static constexpr int kWidth = 2000;
+    static constexpr int kHeight = 1600;
 
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM(return new TextBlobRandomFont;)
 }
 #endif