src: remove unused parameters

PR-URL: https://github.com/nodejs/node/pull/13085
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ron Korving <ron@ronkorving.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>

src/string_bytes.h

@@ -43,7 +43,7 @@ class StringBytes {
                        v8::Local<v8::Value> encoding,
                        enum encoding _default) {
       enum encoding enc = ParseEncoding(env->isolate(), encoding, _default);
-      if (!StringBytes::IsValidString(env->isolate(), string, enc)) {
+      if (!StringBytes::IsValidString(string, enc)) {
         env->ThrowTypeError("Bad input string");
         return false;
       }
@@ -69,8 +69,7 @@ class StringBytes {
   // Does the string match the encoding? Quick but non-exhaustive.
   // Example: a HEX string must have a length that's a multiple of two.
   // FIXME(bnoordhuis) IsMaybeValidString()? Naming things is hard...
-  static bool IsValidString(v8::Isolate* isolate,
-                            v8::Local<v8::String> string,
+  static bool IsValidString(v8::Local<v8::String> string,
                             enum encoding enc);
 
   // Fast, but can be 2 bytes oversized for Base64, and
@@ -87,8 +86,7 @@ class StringBytes {
 
   // If the string is external then assign external properties to data and len,
   // then return true. If not return false.
-  static bool GetExternalParts(v8::Isolate* isolate,
-                               v8::Local<v8::Value> val,
+  static bool GetExternalParts(v8::Local<v8::Value> val,
                                const char** data,
                                size_t* len);
 
@@ -125,8 +123,6 @@ class StringBytes {
  private:
   static size_t WriteUCS2(char* buf,
                           size_t buflen,
-                          size_t nbytes,
-                          const char* data,
                           v8::Local<v8::String> str,
                           int flags,
                           size_t* chars_written);