Linux: Bump up the file descriptor limit for the browser process.
Linux: Bump up the file descriptor limit for the browser process.

BUG=539567

Review URL: https://codereview.chromium.org/1398853005

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#353779}

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