Looks good!
================
Comment at: clang-tidy/google/NamedParameterCheck.cpp:73
@@ +72,3 @@
+ for (auto P : UnnamedParams) {
+ // If the method is overridden try to copy the name from the base method
+ // into the overrider.
----------------
Add a comma after "overridden"?
http://reviews.llvm.org/D4518