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

gm/cubicpaths.cpp

Index: gm/cubicpaths.cpp
diff --git a/gm/cubicpaths.cpp b/gm/cubicpaths.cpp
index 819dac25dc24115fa95f7316f5f4dc931f12c9ac..abac5b21776bcebf952a3f41d79161263e5933fd 100644
--- a/gm/cubicpaths.cpp
+++ b/gm/cubicpaths.cpp
@@ -158,7 +158,7 @@ protected:
             SkPath::FillType fFill;
             const char*      fName;
         };
-        static const FillAndName gFills[] = {
+        constexpr FillAndName gFills[] = {
             {SkPath::kWinding_FillType, "Winding"},
             {SkPath::kEvenOdd_FillType, "Even / Odd"},
             {SkPath::kInverseWinding_FillType, "Inverse Winding"},
@@ -168,7 +168,7 @@ protected:
             SkPaint::Style fStyle;
             const char*    fName;
         };
-        static const StyleAndName gStyles[] = {
+        constexpr StyleAndName gStyles[] = {
             {SkPaint::kFill_Style, "Fill"},
             {SkPaint::kStroke_Style, "Stroke"},
             {SkPaint::kStrokeAndFill_Style, "Stroke And Fill"},
@@ -178,7 +178,7 @@ protected:
             SkPaint::Join fJoin;
             const char*   fName;
         };
-        static const CapAndName gCaps[] = {
+        constexpr CapAndName gCaps[] = {
             {SkPaint::kButt_Cap, SkPaint::kBevel_Join, "Butt"},
             {SkPaint::kRound_Cap, SkPaint::kRound_Join, "Round"},
             {SkPaint::kSquare_Cap, SkPaint::kBevel_Join, "Square"}
@@ -302,7 +302,7 @@ protected:
             SkPath::FillType fFill;
             const char*      fName;
         };
-        static const FillAndName gFills[] = {
+        constexpr FillAndName gFills[] = {
             {SkPath::kWinding_FillType, "Winding"},
             {SkPath::kEvenOdd_FillType, "Even / Odd"},
             {SkPath::kInverseWinding_FillType, "Inverse Winding"},
@@ -312,7 +312,7 @@ protected:
             SkPaint::Style fStyle;
             const char*    fName;
         };
-        static const StyleAndName gStyles[] = {
+        constexpr StyleAndName gStyles[] = {
             {SkPaint::kFill_Style, "Fill"},
             {SkPaint::kStroke_Style, "Stroke"},
             {SkPaint::kStrokeAndFill_Style, "Stroke And Fill"},
@@ -322,7 +322,7 @@ protected:
             SkPaint::Join fJoin;
             const char*   fName;
         };
-        static const CapAndName gCaps[] = {
+        constexpr CapAndName gCaps[] = {
             {SkPaint::kButt_Cap, SkPaint::kBevel_Join, "Butt"},
             {SkPaint::kRound_Cap, SkPaint::kRound_Join, "Round"},
             {SkPaint::kSquare_Cap, SkPaint::kBevel_Join, "Square"}