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

gm/nested.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 "SkPath.h"
 #include "SkRandom.h"
@@ skipping 105 matching lines @@
                 }
             }
 
             xOff = 2;
             yOff += 45;
         }
 
     }
 
 private:
-    static const int kImageWidth = 269;
-    static const int kImageHeight = 134;
+    static constexpr int kImageWidth = 269;
+    static constexpr int kImageHeight = 134;
 
     bool fDoAA;
     bool fFlipped;
 
     typedef GM INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 DEF_GM( return new NestedGM(/* doAA = */ true,  /* flipped = */ false); )
 DEF_GM( return new NestedGM(/* doAA = */ false, /* flipped = */ false); )
 DEF_GM( return new NestedGM(/* doAA = */ true,  /* flipped = */ true); )
 DEF_GM( return new NestedGM(/* doAA = */ false, /* flipped = */ true); )
 
 }