[builtins] Move non-i18n String case conversion functions to C++

src/debug/debug-evaluate.cc

Index: src/debug/debug-evaluate.cc
diff --git a/src/debug/debug-evaluate.cc b/src/debug/debug-evaluate.cc
index c09cd4704ad41f33489047b913fae18171998fb3..281e6fd1dc172f5d004c87edaea949aa36ee614e 100644
--- a/src/debug/debug-evaluate.cc
+++ b/src/debug/debug-evaluate.cc
@@ -297,8 +297,6 @@ bool IntrinsicHasNoSideEffect(Runtime::FunctionId id) {
     case Runtime::kStringReplaceOneCharWithString:
     case Runtime::kSubString:
     case Runtime::kInlineSubString:
-    case Runtime::kStringToLowerCase:
-    case Runtime::kStringToUpperCase:
     case Runtime::kRegExpInternalReplace:
     // Literals.
     case Runtime::kCreateArrayLiteral:
@@ -463,6 +461,8 @@ bool BuiltinHasNoSideEffect(Builtins::Name id) {
     case Builtins::kStringPrototypeSubstr:
     case Builtins::kStringPrototypeSubstring:
     case Builtins::kStringPrototypeToString:
+    case Builtins::kStringPrototypeToLowerCase:
+    case Builtins::kStringPrototypeToUpperCase:
     case Builtins::kStringPrototypeTrim:
     case Builtins::kStringPrototypeTrimLeft:
     case Builtins::kStringPrototypeTrimRight: