setup_links.py fix so that FFmpeg compiles on windows.
Fix creates a symlink tools/generate_stubs -> chromium/src/tools/generate_stubs which is used by ffmpeg on windows.
BUG=468365
NOTRY=True
Review URL: https://codereview.webrtc.org/1586083003
Cr-Commit-Position: refs/heads/master@{#11264}
diff --git a/.gitignore b/.gitignore
index 7090f4a..4811f15 100644
--- a/.gitignore
+++ b/.gitignore
@@ -141,6 +141,7 @@
/tools/android
/tools/clang
/tools/generate_library_loader
+/tools/generate_stubs
/tools/gn
/tools/grit
/tools/gyp