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

gm/degeneratesegments.cpp

Index: gm/degeneratesegments.cpp
diff --git a/gm/degeneratesegments.cpp b/gm/degeneratesegments.cpp
index d5164908b64d6e7d5d2d9f22a71b7428bebbc82c..c7254f2e93366165646b8c8b1ac65a49510803c9 100644
--- a/gm/degeneratesegments.cpp
+++ b/gm/degeneratesegments.cpp
@@ -208,7 +208,7 @@ protected:
     }
 
     virtual void onDraw(SkCanvas* canvas) {
-    static const AddSegmentFunc gSegmentFunctions[] = {
+    constexpr AddSegmentFunc gSegmentFunctions[] = {
         AddMove,
         AddMoveClose,
         AddDegenLine,
@@ -231,7 +231,7 @@ protected:
         AddMoveCubic,
         AddMoveCubicClose
     };
-    static const char* gSegmentNames[] = {
+    const char* gSegmentNames[] = {
         "Move",
         "MoveClose",
         "DegenLine",
@@ -259,7 +259,7 @@ 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"},
@@ -269,7 +269,7 @@ protected:
             SkPaint::Style fStyle;
             const char*    fName;
         };
-        static const StyleAndName gStyles[] = {
+        constexpr StyleAndName gStyles[] = {
             {SkPaint::kFill_Style, "Fill"},
             {SkPaint::kStroke_Style, "Stroke 10"},
             {SkPaint::kStrokeAndFill_Style, "Stroke 10 And Fill"}
@@ -279,7 +279,7 @@ 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"}