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

gm/lcdoverlap.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.
  */
 
 
 /*
  * Tests overlapping LCD text
  */
 
 #include "gm.h"
 #include "SkCanvas.h"
 #include "SkSurface.h"
 #include "SkTextBlob.h"
 
 namespace skiagm {
 
-static const int kWidth = 750;
-static const int kHeight = 750;
+constexpr int kWidth = 750;
+constexpr int kHeight = 750;
 
 class LcdOverlapGM : public skiagm::GM {
 public:
     LcdOverlapGM() {
         const int kPointSize = 25;
         fTextHeight = SkIntToScalar(kPointSize);
     }
 
 protected:
     SkString onShortName() override {
@@ skipping 59 matching lines @@
 private:
     SkScalar fTextHeight;
     SkAutoTUnref<const SkTextBlob> fBlob;
     typedef skiagm::GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM( return new LcdOverlapGM; )
 }