Revert of [intrinsic] Drop the %_ValueOf intrinsic.

src/code-stub-assembler.h

Index: src/code-stub-assembler.h
diff --git a/src/code-stub-assembler.h b/src/code-stub-assembler.h
index a3460f797e5385cfe76e29f55449a478f48181c1..f29701020791ffe5f67d9099c2236a2b4836d204 100644
--- a/src/code-stub-assembler.h
+++ b/src/code-stub-assembler.h
@@ -16,8 +16,6 @@
 class CallInterfaceDescriptor;
 class StatsCounter;
 class StubCache;
-
-enum class PrimitiveType { kBoolean, kNumber, kString, kSymbol };
 
 // Provides JavaScript-specific "macro-assembler" functionality on top of the
 // CodeAssembler. By factoring the JavaScript-isms out of the CodeAssembler,
@@ -253,12 +251,6 @@
   // or returns the {value} converted to a String otherwise.
   compiler::Node* ToThisString(compiler::Node* context, compiler::Node* value,
                                char const* method_name);
-  // Throws a TypeError for {method_name} if {value} is neither of the given
-  // {primitive_type} nor a JSValue wrapping a value of {primitive_type}, or
-  // returns the {value} (or wrapped value) otherwise.
-  compiler::Node* ToThisValue(compiler::Node* context, compiler::Node* value,
-                              PrimitiveType primitive_type,
-                              char const* method_name);
 
   // String helpers.
   // Load a character from a String (might flatten a ConsString).