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

gm/arithmode.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 "SkCanvas.h"
 #include "SkColorPriv.h"
@@ skipping 64 matching lines @@
     virtual SkString onShortName() {
         return SkString("arithmode");
     }
 
     virtual SkISize onISize() { return SkISize::Make(640, 572); }
 
     virtual void onDraw(SkCanvas* canvas) {
         SkBitmap src = make_src();
         SkBitmap dst = make_dst();
 
-        const SkScalar one = SK_Scalar1;
-        static const SkScalar K[] = {
+        constexpr SkScalar one = SK_Scalar1;
+        constexpr SkScalar K[] = {
             0, 0, 0, 0,
             0, 0, 0, one,
             0, one, 0, 0,
             0, 0, one, 0,
             0, one, one, 0,
             0, one, -one, 0,
             0, one/2, one/2, 0,
             0, one/2, one/2, one/4,
             0, one/2, one/2, -one/4,
             one/4, one/2, one/2, 0,
@@ skipping 56 matching lines @@
         }
     }
 
 private:
     typedef GM INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 DEF_GM( return new ArithmodeGM; )