Fix iOS8 crash in background mode.

Fix iOS8 crash in background mode.
Add system version check functionality in UIDevice+RTCDevice category.
Check for iOS system version when handle capture session interruption.

BUG=webrtc:7201
Review-Url: https://codereview.webrtc.org/2733773003
Cr-Commit-Position: refs/heads/master@{#17079}
Committed: https://chromium.googlesource.com/external/webrtc/+/846e1be85c74897a8a335c8b24b0a1a354e62b6e

[sdkdimon, 2017-03-06 12:12:03]

sdkdimon@gmail.com changed reviewers:
+ tkchin@webrtc.org

[sdkdimon, 2017-03-06 12:12:04]

Add system version check functionality in UIDevice+RTCDevice category. Check for
iOS system version when handle capture session interruption.

[tkchin_webrtc, 2017-03-07 00:18:40]

On 2017/03/06 12:12:04, sdkdimon wrote:
> Add system version check functionality in UIDevice+RTCDevice category. Check
for
> iOS system version when handle capture session interruption.

lgtm

I'll be deleting the other changes you made in favor of this one. fyi you can
git cl upload to reuse the same review.

Thanks for the contribution!

[tkchin_webrtc, 2017-03-07 00:19:26]

The CQ bit was checked by tkchin@webrtc.org

[commit-bot: I haz the power, 2017-03-07 00:19:28]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.webrtc.org/...

[commit-bot: I haz the power, 2017-03-07 00:42:19]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1488845966620980, "parent_rev":
"fe3e97bf39cf5b8cad1b4ac7faaff305adb87f3b", "commit_rev":
"846e1be85c74897a8a335c8b24b0a1a354e62b6e"}

[commit-bot: I haz the power, 2017-03-07 00:42:22]

Description was changed from

==========
Fix iOS8 crash in background mode.
Add system version check functionality in UIDevice+RTCDevice category.
Check for iOS system version when handle capture session interruption.

BUG=webrtc:7201
==========

to

==========
Fix iOS8 crash in background mode.
Add system version check functionality in UIDevice+RTCDevice category.
Check for iOS system version when handle capture session interruption.

BUG=webrtc:7201

Review-Url: https://codereview.webrtc.org/2733773003
Cr-Commit-Position: refs/heads/master@{#17079}
Committed:
https://chromium.googlesource.com/external/webrtc/+/846e1be85c74897a8a335c8b2...
==========

[commit-bot: I haz the power, 2017-03-07 00:42:23]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/external/webrtc/+/846e1be85c74897a8a335c8b2...