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

gm/imageblur2.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 "SkBlurImageFilter.h"
 #include "SkRandom.h"
 
 // TODO deprecate imageblur
 
 #define WIDTH 500
 #define HEIGHT 500
 
-static const float kBlurSigmas[] = {
+constexpr float kBlurSigmas[] = {
         0.0, 0.3f, 0.5f, 2.0f, 32.0f, 80.0f };
 
 const char* kTestStrings[] = {
         "The quick`~",
         "brown fox[]",
         "jumped over",
         "the lazy@#$",
         "dog.{}!%^&",
         "*()+=-\\'\"/",
 };
@@ skipping 56 matching lines @@
     SkString fName;
 
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM(return new BlurImageFilter;)
 
 }