tree 2c4ce639e821d33dde6e39a90f076deacc756b01
parent 2e556cfd56258ea66831a15d46a23ea8b089cd37
author brettw <brettw@chromium.org> 1462237593 -0700
committer Commit bot <commit-bot@chromium.org> 1462237750 +0000

GN: forward_variables_from shouldn't clobber vars.

The documentation for forward_variables_from specifies that it will give an error if the variable already exists in the target scope. But this was not implemented. Instead, the value would be silently overwritten.

This change implements the error, and fixes the times this happens in the Linux and Android builds.

Review-Url: https://codereview.chromium.org/1943583002
Cr-Original-Commit-Position: refs/heads/master@{#391136}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 0785c950dce7221b10c21e911795e181076b90db