[PATCH] D19154: Remove some unneeded headers and replace some headers with forward class declarations

[Eugene via llvm-commits]

kevgs added a comment.

After applying this patch clang file include/clang/Lex/LiteralSupport.h needs to be added a "llvm/ADT/ArrayRef.h" header to it to fix a broken build.


http://reviews.llvm.org/D19154