[cleanup] Replace ToBooleanICStub::Types with ToBooleanHints

src/type-hints.h

Index: src/type-hints.h
diff --git a/src/type-hints.h b/src/type-hints.h
index cdf470956f6c0830ed46f22cba7b0548ba70c1b7..e6138c771dfba73b449c4d8b49e916992920a959 100644
--- a/src/type-hints.h
+++ b/src/type-hints.h
@@ -55,7 +55,9 @@ enum class ToBooleanHint : uint16_t {
   kHeapNumber = 1u << 7,
   kSimdValue = 1u << 8,
   kAny = kUndefined | kBoolean | kNull | kSmallInteger | kReceiver | kString |
-         kSymbol | kHeapNumber | kSimdValue
+         kSymbol | kHeapNumber | kSimdValue,
+  kNeedsMap = kReceiver | kString | kSymbol | kHeapNumber | kSimdValue,
+  kCanBeUndetectable = kReceiver,
 };
 
 std::ostream& operator<<(std::ostream&, ToBooleanHint);
@@ -66,6 +68,23 @@ std::ostream& operator<<(std::ostream&, ToBooleanHints);
 
 DEFINE_OPERATORS_FOR_FLAGS(ToBooleanHints)
 
+enum StringAddFlags {
+  // Omit both parameter checks.
+  STRING_ADD_CHECK_NONE = 0,
+  // Check left parameter.
+  STRING_ADD_CHECK_LEFT = 1 << 0,
+  // Check right parameter.
+  STRING_ADD_CHECK_RIGHT = 1 << 1,
+  // Check both parameters.
+  STRING_ADD_CHECK_BOTH = STRING_ADD_CHECK_LEFT | STRING_ADD_CHECK_RIGHT,
+  // Convert parameters when check fails (instead of throwing an exception).
+  STRING_ADD_CONVERT = 1 << 2,
+  STRING_ADD_CONVERT_LEFT = STRING_ADD_CHECK_LEFT | STRING_ADD_CONVERT,
+  STRING_ADD_CONVERT_RIGHT = STRING_ADD_CHECK_RIGHT | STRING_ADD_CONVERT
+};
+
+std::ostream& operator<<(std::ostream& os, const StringAddFlags& flags);
+
 }  // namespace internal
 }  // namespace v8