This member function alters instance state in a few implementations, so
it shouldn't be made const.
The state manager parameter also shouldn't be const. Retrieved data
from the post constructed instance is further modified in some
implementations. This removes the constness on this parameter in order
to fix more const_cast usages in a follow-up change.
Like the prior changes normalizing the inclusions within headers, this
tackles the cpp files of the RuntimeCommonB target, making these source
files consistent with their headers.
Makes use of the C++14 make_unique allocation function to allocate class
instances where applicable instead of a reset with a new operator within
it.
This doesn't touch cases where buffers are allocated, given make_unique
would zero-initialize them.
