Reland of Merge android's use_gold settings with the main use_gold GN arg logic

This also fixes Android setting -Wl,--icf=all in a different spot.

Reason for reland:
Removed --icf=safe for x86

BUG=606749,576197,611668

Review-Url: https://codereview.chromium.org/1996433002
Cr-Commit-Position: refs/heads/master@{#394655}
4 files changed