heap_profile: Symlink to /tmp/heap_profile-latest.
heap_profile: Symlink to /tmp/heap_profile-latest.

This helps because the Upload button on pprof/ defaults to the last
directory used.

Change-Id: I71333b13e6c69fb12c749fe64e7c5f0b2a677dde
google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto