a11efd4926
In preparation for removing the `#include "llvm/ADT/StringExtras.h"` from the header to source file of `llvm/Support/Error.h`, first add in all the missing includes that were previously included transitively through this header. This is fixing all files missed in b0abd4893fa1 and 39d8e6e22cd1. Differential Revision: https://reviews.llvm.org/D154763