Remove use_system_v8 logic from the mailine gyp file.

Remove use_system_v8 logic from the mailine gyp file.

It now lives in build/linux/unbundle in Chromium source tree.

BUG=chromium:226860
Moved to https://codereview.chromium.org/15001031/.

[Paweł Hajdan Jr., 2013-05-02 22:35:09]

Please see the bug for reference. I hope you'll like less complexity in the gyp
file.

There are no functional changes, just removing the giant conditional block, the
use_system branch, and reindenting.

I'll also need to remove use_system_v8 variable for build/common.gypi - for some
reason these two files are in two different checkouts on my machine. When you
land, feel free to actually add that change.

[Paweł Hajdan Jr., 2013-05-06 19:11:24]

ping

[Jakob Kummerow, 2013-05-07 12:12:22]

LGTM -- I guess. The Rietveld diff viewer turns this change into such a big mess
that it's impossible to verify what's going on.

Sorry for the delay; my to-do list is long.

I'll land this, including the common.gypi update.

[Jakob Kummerow, 2013-05-15 13:11:18]

Sorry, sat on this for way too long, and now the patch doesn't apply any more,
so I've re-created, re-uploaded and committed it at
https://codereview.chromium.org/15001031/.

Thanks for the contribution, I do indeed like the simplification!