RFR(XS) 8183935: G1GCPhaseTimes and G1RootProcessor do not include macros.hpp

[Mikael Gerdin]

Hi,

Please review this trivial change to add includes of macros.hpp to 
G1GCPhaseTimes and G1RootProcessor. They both the value of INCLUDE_AOT 
and as such should explicitly include the proper header to ensure that 
it is set to the correct value.

Bug: https://bugs.openjdk.java.net/browse/JDK-8183935
Webrev: http://cr.openjdk.java.net/~mgerdin/8183935/webrev.0/
Testing: JPRT build-only

Thanks
/Mikael