Fix expectations for debian deps.

The change is due to launching LTO ([1], [2]) on Linux, which eliminated
some of the unused symbols deps, thus decreasing the effective version
of libdbus-1-3 Chrome depends on.

BUG=453195

[1] http://llvm.org/docs/LinkTimeOptimization.html
[2] https://codereview.chromium.org/2003733004

(actually try bots had run; the line below is to bypass a slow flaky bot)
NOTRY=true

Review-Url: https://codereview.chromium.org/2003143002
Cr-Commit-Position: refs/heads/master@{#395411}