272   Arena* new_arena = pool_->AllocArena(std::max(arena_allocator::kArenaDefaultSize, bytes));  in AllocFromNewArena()  local
273   DCHECK(new_arena != nullptr);  in AllocFromNewArena()
274   DCHECK_LE(bytes, new_arena->Size());  in AllocFromNewArena()
275   if (static_cast<size_t>(end_ - ptr_) > new_arena->Size() - bytes) {  in AllocFromNewArena()
279     new_arena->bytes_allocated_ = bytes;  // UpdateBytesAllocated() on the new_arena.  in AllocFromNewArena()
280     new_arena->next_ = arena_head_->next_;  in AllocFromNewArena()
281     arena_head_->next_ = new_arena;  in AllocFromNewArena()
284     new_arena->next_ = arena_head_;  in AllocFromNewArena()
285     arena_head_ = new_arena;  in AllocFromNewArena()
287     begin_ = new_arena->Begin();  in AllocFromNewArena()
290     end_ = new_arena->End();  in AllocFromNewArena()
292   return new_arena->Begin();  in AllocFromNewArena()