linux_aura: Compile ash into chrome.

linux_aura: Compile ash into chrome.

[This is take three. I believe that I've now fixed all the static
initializers (including both files named debug_utils.cc that were
including <iostream>), the packaging failures, and the black border
on the app list as pointed out by mgiuca@.]

Running chrome with the "--open-ash" parameter will create an ash
desktop window. Ash on Linux has some problems, but at least we're now
compiling the code into the binary.

TODO: The applist isn't positioned correctly, and some details of the
system tray aren't correct.

BUG=300084, 303862
TBR=sky@chromium.org
First Review URL: https://codereview.chromium.org/25108005

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=271725

[Elliot Glaysher, 2014-05-20 19:24:03]

Committed patchset #3 manually as r271725 (presubmit successful).

[sky, 2014-05-20 20:25:22]

LGTM