i.e. #ifndef VM_WHATEVER -> #ifndef RUNTIME_VM_WHATEVER
This lets us remove a hack from the PRESUBMIT.py script that existed
for reasons that are no longer valid, and sets us up to add some
presubmit checks for the GN build.
R=asiva@google.com, rmacnak@google.com
Review URL: https://codereview.chromium.org/2450713004 .
This enables thread-safe logging (e.g., ISL_Print, which will soon be renamed to THR_Print), which is needed for concurrent
marking (DetachCode) and compilation.
Make finalization of GC marking tasks concurrent, now that it's thread-safe.
BUG=
R=iposva@google.com
Review URL: https://codereview.chromium.org//1314673008 .
