add list of files that setlinks generates. This list comes from webrtc .gitignore

R=brucedawson@chromium.org
BUG=none
TESTED=untested

Review URL: https://webrtc-codereview.appspot.com/58439004.

.gitignore

@@ -19,8 +19,17 @@ tools/generate_library_loader
 tools/gn
 tools/gyp
 tools/memory
+tools/protoc_wrapper/protoc_wrapper.py
 tools/python
+tools/swarming_client
 tools/valgrind
+tools/vim/chromium.ycm_extra_conf.py
+tools/vim/clang-format.vim
+tools/vim/filetypes.vim
+tools/vim/mojom/ftdetect/mojomfiletype.vim
+tools/vim/mojom/syntax/mojom.vim
+tools/vim/ninja-build.vim
+tools/vim/ninja_output.py
 tools/win
 
 # Files generated by CMake build