Use Scope::function_kind_ to distinguish arrow function scopes

src/globals.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_GLOBALS_H_
 #define V8_GLOBALS_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 739 matching lines @@
 };
 
 
 enum ScopeType {
   EVAL_SCOPE,      // The top-level scope for an eval source.
   FUNCTION_SCOPE,  // The top-level scope for a function.
   MODULE_SCOPE,    // The scope introduced by a module literal
   SCRIPT_SCOPE,    // The top-level scope for a script or a top-level eval.
   CATCH_SCOPE,     // The scope introduced by catch.
   BLOCK_SCOPE,     // The scope introduced by a new block.
-  WITH_SCOPE,      // The scope introduced by with.
-  ARROW_SCOPE      // The top-level scope for an arrow function literal.
+  WITH_SCOPE       // The scope introduced by with.
 };
 
 // The mips architecture prior to revision 5 has inverted encoding for sNaN.
 #if (V8_TARGET_ARCH_MIPS && !defined(_MIPS_ARCH_MIPS32R6)) || \
     (V8_TARGET_ARCH_MIPS64 && !defined(_MIPS_ARCH_MIPS64R6))
 const uint32_t kHoleNanUpper32 = 0xFFFF7FFF;
 const uint32_t kHoleNanLower32 = 0xFFFF7FFF;
 #else
 const uint32_t kHoleNanUpper32 = 0xFFF7FFFF;
 const uint32_t kHoleNanLower32 = 0xFFF7FFFF;
@@ skipping 248 matching lines @@
   kind = static_cast<FunctionKind>(kind | FunctionKind::kInObjectLiteral);
   DCHECK(IsValidFunctionKind(kind));
   return kind;
 }
 }  // namespace internal
 }  // namespace v8
 
 namespace i = v8::internal;
 
 #endif  // V8_GLOBALS_H_