convert a bunch of DCHECKs to STATIC_ASSERT

src/elements-kind.h

Index: src/elements-kind.h
diff --git a/src/elements-kind.h b/src/elements-kind.h
index b7d169b82e9ebbdb8393bd826864530bd06a0733..c3184b93835313d30efc4f12051ceec49b47053e 100644
--- a/src/elements-kind.h
+++ b/src/elements-kind.h
@@ -5,6 +5,7 @@
 #ifndef V8_ELEMENTS_KIND_H_
 #define V8_ELEMENTS_KIND_H_
 
+#include "src/base/macros.h"
 #include "src/checks.h"
 
 namespace v8 {
@@ -115,7 +116,7 @@ inline bool IsFixedTypedArrayElementsKind(ElementsKind kind) {
 
 
 inline bool IsFastElementsKind(ElementsKind kind) {
-  DCHECK(FIRST_FAST_ELEMENTS_KIND == 0);
+  STATIC_ASSERT(FIRST_FAST_ELEMENTS_KIND == 0);
   return kind <= FAST_HOLEY_DOUBLE_ELEMENTS;
 }