[Isolates] Convert more static data either to read-only or to per-isolate.

src/token.cc

Index: src/token.cc
diff --git a/src/token.cc b/src/token.cc
index 21fa9ee4d74823c95ed630512a246e4abcc34f25..0dcd389e2d78b8a9d136e1831100a7f30e58af9c 100644
--- a/src/token.cc
+++ b/src/token.cc
@@ -33,21 +33,21 @@ namespace v8 {
 namespace internal {
 
 #define T(name, string, precedence) #name,
-const char* Token::name_[NUM_TOKENS] = {
+const char* const Token::name_[NUM_TOKENS] = {
   TOKEN_LIST(T, T, IGNORE_TOKEN)
 };
 #undef T
 
 
 #define T(name, string, precedence) string,
-const char* Token::string_[NUM_TOKENS] = {
+const char* const Token::string_[NUM_TOKENS] = {
   TOKEN_LIST(T, T, IGNORE_TOKEN)
 };
 #undef T
 
 
 #define T(name, string, precedence) precedence,
-int8_t Token::precedence_[NUM_TOKENS] = {
+const int8_t Token::precedence_[NUM_TOKENS] = {
   TOKEN_LIST(T, T, IGNORE_TOKEN)
 };
 #undef T