PixelCoralClientUtils: Thread-safety fixes.
The static member m_markSpecialRegions is nowhere used. Remove it.
Add some missing const qualifiers.
Remove some now unneeded NOT_THREAD_SAFE qualifiers.
The static member m_markSpecialRegions is nowhere used. Remove it.
Add some missing const qualifiers.
Remove some now unneeded NOT_THREAD_SAFE qualifiers.