Add branch annotations for deallocating against the page heap.
Add branch annotations for deallocating against the page heap.

Most allocations will be smaller than a huge page and go to the filler.  Most
of those huge pages will still have allocations.

PiperOrigin-RevId: 361835950
Change-Id: I33c83ae459ddab595bf190217aa81ceba0ee60e3

google/tcmalloc,google/tcmalloc,google/tcmalloc