Generate proper ParmVarDecls for rsForEachInternal().

Bug: http://b/26987366

We were previously relying on the fact that these declarations weren't
used, but the latest version of Clang actually checks the ParamInfo of
FunctionDecls.

(cherry picked from commit 8f0192fdbc1033dcae4c03e52e1225a1cee79056)

Change-Id: Ie0f23f98decb45e6773aecb1a54fea56d120b31b
1 file changed