Rename seeded_number_dictionary_map.

Now that we only have the seeded variant, let's call it
number_dictionary_map. It's cleaner.

R=mstarzinger@chromium.org

Change-Id: I3e36ecb15140b5def835ca8ebe50ab829a21892d
Reviewed-on: https://chromium-review.googlesource.com/756749Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49183}

src/heap/heap.h

@@ -106,7 +106,7 @@ using v8::MemoryPressureLevel;
   V(Map, ordered_hash_table_map, OrderedHashTableMap)                          \
   V(Map, name_dictionary_map, NameDictionaryMap)                               \
   V(Map, global_dictionary_map, GlobalDictionaryMap)                           \
-  V(Map, seeded_number_dictionary_map, NumberDictionaryMap)                    \
+  V(Map, number_dictionary_map, NumberDictionaryMap)                           \
   V(Map, sloppy_arguments_elements_map, SloppyArgumentsElementsMap)            \
   V(Map, small_ordered_hash_map_map, SmallOrderedHashMapMap)                   \
   V(Map, small_ordered_hash_set_map, SmallOrderedHashSetMap)                   \

src/heap/setup-heap-internal.cc

@@ -290,7 +290,7 @@ bool Heap::CreateInitialMaps() {
     ALLOCATE_VARSIZE_MAP(HASH_TABLE_TYPE, ordered_hash_table)
     ALLOCATE_VARSIZE_MAP(HASH_TABLE_TYPE, name_dictionary)
     ALLOCATE_VARSIZE_MAP(HASH_TABLE_TYPE, global_dictionary)
-    ALLOCATE_VARSIZE_MAP(HASH_TABLE_TYPE, seeded_number_dictionary)
+    ALLOCATE_VARSIZE_MAP(HASH_TABLE_TYPE, number_dictionary)
 
     ALLOCATE_VARSIZE_MAP(FIXED_ARRAY_TYPE, function_context)
     ALLOCATE_VARSIZE_MAP(FIXED_ARRAY_TYPE, catch_context)

src/objects-inl.h

@@ -433,7 +433,7 @@ bool HeapObject::IsNameDictionary() const {
 }
 
 bool HeapObject::IsNumberDictionary() const {
-  return map() == GetHeap()->seeded_number_dictionary_map();
+  return map() == GetHeap()->number_dictionary_map();
 }
 
 bool HeapObject::IsStringTable() const { return IsHashTable(); }
@@ -4845,7 +4845,7 @@ uint32_t NumberDictionaryShape::HashForObject(Isolate* isolate, Object* other) {
 }
 
 Map* NumberDictionaryShape::GetMap(Isolate* isolate) {
-  return isolate->heap()->seeded_number_dictionary_map();
+  return isolate->heap()->number_dictionary_map();
 }
 
 Handle<Object> NumberDictionaryShape::AsHandle(Isolate* isolate, uint32_t key) {