Reland "Merge cellspace into old pointer space"

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index da510ad4fd3b5d707817a98d3426382036ab6130..28c84106df4c260cfbd2e96972a12efcd1f10964 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -229,10 +229,6 @@ void i::V8::FatalProcessOutOfMemory(const char* location, bool take_snapshot) {
   heap_stats.map_space_size = &map_space_size;
   intptr_t map_space_capacity;
   heap_stats.map_space_capacity = &map_space_capacity;
-  intptr_t cell_space_size;
-  heap_stats.cell_space_size = &cell_space_size;
-  intptr_t cell_space_capacity;
-  heap_stats.cell_space_capacity = &cell_space_capacity;
   intptr_t lo_space_size;
   heap_stats.lo_space_size = &lo_space_size;
   int global_handle_count;