Fixes for PNaCl build of remoting client plugin in chromium.

Fixes for PNaCl build of remoting client plugin with GN.

1. Added support for PNaCl in base.
2. Separated parts of desktop_capture module that need to be
   compiled for PNaCl.

BUG=512899
R=jiayl@chromium.org, jiayl@webrtc.org

Committed: https://chromium.googlesource.com/external/webrtc/+/098c1de578e08a67eb1684ede6154e5d6301d624

[Sergey Ulanov, 2015-08-27 23:17:03]

sergeyu@chromium.org changed reviewers:
+ jiayl@webrtc.org

[jiayl, 2015-08-27 23:28:34]

jiayl@chromium.org changed reviewers:
+ jiayl@chromium.org

[jiayl, 2015-08-27 23:28:34]

lgtm

[Sergey Ulanov, 2015-08-27 23:29:59]

On 2015/08/27 23:28:34, jiayl wrote:
> lgtm

Thanks! Will need to land https://codereview.chromium.org/1307693003 before
landing this CL.

[Sergey Ulanov, 2015-08-31 23:17:28]

The CQ bit was checked by sergeyu@chromium.org

[commit-bot: I haz the power, 2015-08-31 23:17:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1323453003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1323453003/1

[commit-bot: I haz the power, 2015-08-31 23:17:39]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-08-31 23:17:40]

No L-G-T-M from a valid reviewer yet. Only full committers are accepted.
Even if an L-G-T-M may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[jiayl2, 2015-08-31 23:18:28]

lgtm

[Sergey Ulanov, 2015-08-31 23:21:31]

The CQ bit was checked by sergeyu@chromium.org

[commit-bot: I haz the power, 2015-08-31 23:21:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1323453003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1323453003/1

[commit-bot: I haz the power, 2015-08-31 23:23:05]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-08-31 23:23:06]

Try jobs failed on following builders:
  linux_gn_rel on tryserver.webrtc (JOB_FAILED,
http://build.chromium.org/p/tryserver.webrtc/builders/linux_gn_rel/builds/5271)

[Sergey Ulanov, 2015-08-31 23:31:56]

The CQ bit was checked by sergeyu@chromium.org

[Sergey Ulanov, 2015-08-31 23:31:57]

The patchset sent to the CQ was uploaded after l-g-t-m from jiayl@chromium.org,
jiayl@webrtc.org
Link to the patchset: https://codereview.webrtc.org/1323453003/#ps20001 (title:
" ")

[commit-bot: I haz the power, 2015-08-31 23:32:05]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1323453003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1323453003/20001

[commit-bot: I haz the power, 2015-09-01 01:32:24]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-09-01 01:32:24]

Try jobs failed on following builders:
  android on tryserver.webrtc (JOB_TIMED_OUT, no build URL)
  mac_baremetal on tryserver.webrtc (JOB_TIMED_OUT, no build URL)

[Sergey Ulanov, 2015-09-01 18:36:54]

Committed patchset #2 (id:20001) manually as
098c1de578e08a67eb1684ede6154e5d6301d624.