Remove unused function_name param from DesugarAsyncFunctionBody

R=littledan@chromium.org

Review-Url: https://codereview.chromium.org/2302183002
Cr-Commit-Position: refs/heads/master@{#39227}

src/parsing/parser.cc

@@ -3239,8 +3239,7 @@ void Parser::ParseArrowFunctionFormalParameters(
   AddFormalParameter(parameters, expr, initializer, end_pos, is_rest);
 }
 
-void Parser::DesugarAsyncFunctionBody(const AstRawString* function_name,
-                                      Scope* scope, ZoneList<Statement*>* body,
+void Parser::DesugarAsyncFunctionBody(Scope* scope, ZoneList<Statement*>* body,
                                       FunctionKind kind,
                                       FunctionBodyType body_type,
                                       bool accept_IN, int pos, bool* ok) {
@@ -4083,7 +4082,7 @@ ZoneList<Statement*>* Parser::ParseEagerFunctionBody(
                 zone());
     } else if (IsAsyncFunction(kind)) {
       const bool accept_IN = true;
-      DesugarAsyncFunctionBody(function_name, inner_scope, body, kind,
+      DesugarAsyncFunctionBody(inner_scope, body, kind,
                                FunctionBodyType::kNormal, accept_IN, pos,
                                CHECK_OK);
     } else {

src/parsing/parser.h

@@ -426,8 +426,7 @@ class Parser : public ParserBase<Parser> {
       ZoneList<const AstRawString*>* names, ForStatement* loop, Statement* init,
       Expression* cond, Statement* next, Statement* body, bool* ok);
 
-  void DesugarAsyncFunctionBody(const AstRawString* function_name, Scope* scope,
-                                ZoneList<Statement*>* body,
+  void DesugarAsyncFunctionBody(Scope* scope, ZoneList<Statement*>* body,
                                 FunctionKind kind, FunctionBodyType type,
                                 bool accept_IN, int pos, bool* ok);
 
@@ -560,9 +559,9 @@ class Parser : public ParserBase<Parser> {
   void ParseAsyncArrowSingleExpressionBody(ZoneList<Statement*>* body,
                                            bool accept_IN,
                                            int pos, bool* ok) {
-    DesugarAsyncFunctionBody(
-        ast_value_factory()->empty_string(), scope(), body, kAsyncArrowFunction,
-        FunctionBodyType::kSingleExpression, accept_IN, pos, ok);
+    DesugarAsyncFunctionBody(scope(), body, kAsyncArrowFunction,
+                             FunctionBodyType::kSingleExpression, accept_IN,
+                             pos, ok);
   }
 
   ZoneList<Expression*>* PrepareSpreadArguments(ZoneList<Expression*>* list);