debuggerd_handler: raise capabilities before running crash_dump.

Raise CapInh and CapAmb after forking to exec crash_dump, so that it
can ptrace us.

Bug: http://b/35174939
Test: debuggerd -b `pidof surfaceflinger`
Change-Id: I32567010a3603cfa494aae9dc0e3ce73fb86b590
1 file changed