[ic] Move sloppy_arguments_elements_map down in the root list.

Addressing comment in https://codereview.chromium.org/2102073002/

BUG=chromium:576312, chromium:623516

Review-Url: https://codereview.chromium.org/2109713002
Cr-Commit-Position: refs/heads/master@{#37343}

src/heap/heap.h

@@ -46,7 +46,6 @@ using v8::MemoryPressureLevel;
   V(Map, fixed_array_map, FixedArrayMap)                                       \
   V(Map, fixed_cow_array_map, FixedCOWArrayMap)                                \
   V(Map, hash_table_map, HashTableMap)                                         \
-  V(Map, unseeded_number_dictionary_map, UnseededNumberDictionaryMap)          \
   V(Map, symbol_map, SymbolMap)                                                \
   V(Map, one_byte_string_map, OneByteStringMap)                                \
   V(Map, one_byte_internalized_string_map, OneByteInternalizedStringMap)       \
@@ -88,6 +87,7 @@ using v8::MemoryPressureLevel;
   V(Map, fixed_double_array_map, FixedDoubleArrayMap)                          \
   V(Map, mutable_heap_number_map, MutableHeapNumberMap)                        \
   V(Map, ordered_hash_table_map, OrderedHashTableMap)                          \
+  V(Map, unseeded_number_dictionary_map, UnseededNumberDictionaryMap)          \
   V(Map, sloppy_arguments_elements_map, SloppyArgumentsElementsMap)            \
   V(Map, message_object_map, JSMessageObjectMap)                               \
   V(Map, neander_map, NeanderMap)                                              \