[XRay] Remove array for Metadata Record Types

This simplifies the implementation of the metadata lookup by using
scoped enums, rather than using enum classes. This way we can get the
number-name mapping without having to resort to comments.

Follow-up to D51289.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@341205 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed