Reland: Bailing out if pc factory fails to get created.

Reland: Bailing out if pc factory fails to get created.

This was reverted, but it turned out GOMA was down.

This prevents us from continuing if we fail initialization.
The failure will happen closer to its source, rather than
when we try to create the first peer connection.

BUG=None
R=glaznev@webrtc.org

Committed: https://crrev.com/6eb75d9e67f02c256436eb96f3c77026486561a1
Cr-Commit-Position: refs/heads/master@{#9948}

Committed: https://crrev.com/fdd1b9a58e4ffbd1442f7d5b1a0bc9c602a8ed5f
Cr-Commit-Position: refs/heads/master@{#9974}

[phoglund, 2015-09-14 13:57:25]

phoglund@webrtc.org changed reviewers:
+ glaznev@webrtc.org

[AlexG, 2015-09-14 16:51:14]

lgtm

[phoglund, 2015-09-15 07:29:47]

The CQ bit was checked by phoglund@webrtc.org

[commit-bot: I haz the power, 2015-09-15 07:29:55]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1339923004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1339923004/1

[commit-bot: I haz the power, 2015-09-15 07:41:06]

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

[commit-bot: I haz the power, 2015-09-15 07:41:07]

Try jobs failed on following builders:
  linux_asan on tryserver.webrtc (JOB_FAILED,
http://build.chromium.org/p/tryserver.webrtc/builders/linux_asan/builds/9293)

[phoglund, 2015-09-15 07:58:59]

The CQ bit was checked by phoglund@webrtc.org

[commit-bot: I haz the power, 2015-09-15 07:59:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1339923004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1339923004/1

[commit-bot: I haz the power, 2015-09-15 14:43:25]

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

[commit-bot: I haz the power, 2015-09-15 14:43:25]

Try jobs failed on following builders:
  win_baremetal on tryserver.webrtc (JOB_TIMED_OUT,
http://build.chromium.org/p/tryserver.webrtc/builders/win_baremetal/builds/7316)

[phoglund, 2015-09-16 06:41:48]

Committed patchset #1 (id:1) manually as
6eb75d9e67f02c256436eb96f3c77026486561a1 (presubmit successful).

[commit-bot: I haz the power, 2015-09-16 06:41:53]

Patchset 1 (id:??) landed as
https://crrev.com/6eb75d9e67f02c256436eb96f3c77026486561a1
Cr-Commit-Position: refs/heads/master@{#9948}

[phoglund, 2015-09-16 07:03:31]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.webrtc.org/1344363002/ by phoglund@webrtc.org.

The reason for reverting is: Breaks goma (??!??!?).

[phoglund, 2015-09-16 10:00:28]

The CQ bit was checked by phoglund@webrtc.org

[commit-bot: I haz the power, 2015-09-16 10:00:35]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1339923004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1339923004/1

[commit-bot: I haz the power, 2015-09-16 10:28:04]

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

[commit-bot: I haz the power, 2015-09-16 10:28:05]

Try jobs failed on following builders:
  android_arm64_rel on tryserver.webrtc (JOB_FAILED,
http://build.chromium.org/p/tryserver.webrtc/builders/android_arm64_rel/build...)

[phoglund, 2015-09-16 11:48:48]

The CQ bit was checked by phoglund@webrtc.org

[commit-bot: I haz the power, 2015-09-16 11:48:55]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1339923004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1339923004/1

[commit-bot: I haz the power, 2015-09-16 15:38:33]

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

[commit-bot: I haz the power, 2015-09-16 15:38:33]

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

[phoglund, 2015-09-17 14:46:00]

Committed patchset #2 (id:20001) manually as
fdd1b9a58e4ffbd1442f7d5b1a0bc9c602a8ed5f (presubmit successful).

[commit-bot: I haz the power, 2015-09-17 14:46:03]

Patchset 2 (id:??) landed as
https://crrev.com/fdd1b9a58e4ffbd1442f7d5b1a0bc9c602a8ed5f
Cr-Commit-Position: refs/heads/master@{#9974}