UserAgent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:46.0) Gecko/20100101 Firefox/46.0

Steps to reproduce the problem:
1. Run gclient sync to fetch Chromium for Android code
2. remove .gclient_entries
3. Run gclient sync to fetch Chromium for Linux code

What is the expected behavior?
gclient sync should provide a way so that android specific dependencies listed in the deps_os section of DEPS files can be removed automatically.

What went wrong?
'gclient sync -D -R' does not work since these android specific dependencies are gitignored, so they are not delete even though '-D' is given.

Did this work before? No 

Chrome version:   Channel: n/a
OS Version: 
Flash Version: 

The requested feature is useful in exporting clean source tarballs for different target OSes with export_tarball.py.