[es6] Function constructor-created functions should be named "anonymous"

src/heap/heap.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_HEAP_HEAP_H_
 #define V8_HEAP_HEAP_H_
 
 #include <cmath>
 #include <map>
 
@@ skipping 285 matching lines @@
   V(Generator_string, "Generator")                             \
   V(throw_string, "throw")                                     \
   V(done_string, "done")                                       \
   V(value_string, "value")                                     \
   V(next_string, "next")                                       \
   V(byte_length_string, "byteLength")                          \
   V(byte_offset_string, "byteOffset")                          \
   V(minus_zero_string, "-0")                                   \
   V(Array_string, "Array")                                     \
   V(Error_string, "Error")                                     \
-  V(RegExp_string, "RegExp")
+  V(RegExp_string, "RegExp")                                   \
+  V(anonymous_string, "anonymous")
 
 #define PRIVATE_SYMBOL_LIST(V)              \
   V(array_iteration_kind_symbol)            \
   V(array_iterator_next_symbol)             \
   V(array_iterator_object_symbol)           \
   V(call_site_function_symbol)              \
   V(call_site_position_symbol)              \
   V(call_site_receiver_symbol)              \
   V(call_site_strict_symbol)                \
   V(class_end_position_symbol)              \
@@ skipping 2392 matching lines @@
   DisallowHeapAllocation no_allocation;  // i.e. no gc allowed.
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG
 }
 }  // namespace v8::internal
 
 #endif  // V8_HEAP_HEAP_H_