Use default header extension map in rtc_event_log2text

Use default header extension map in rtc_event_log2text

Use defaults if the header extension map is missing from the config.

BUG=webrtc:6399
Review-Url: https://codereview.webrtc.org/2983283002
Cr-Commit-Position: refs/heads/master@{#19267}
Committed: https://chromium.googlesource.com/external/webrtc/+/007d56229adb8933960bfb08af1090ec20d48072

[terelius, 2017-07-24 12:49:05]

terelius@webrtc.org changed reviewers:
+ ivoc@webrtc.org

[ivoc, 2017-08-08 11:30:05]

lgtm!

[terelius, 2017-08-08 11:52:00]

The CQ bit was checked by terelius@webrtc.org

[commit-bot: I haz the power, 2017-08-08 11:52:09]

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, 2017-08-08 12:40:26]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1502193120467950, "parent_rev":
"fe6d9ff8911d02d4f0807069bb5bd72a2b70469b", "commit_rev":
"007d56229adb8933960bfb08af1090ec20d48072"}

[commit-bot: I haz the power, 2017-08-08 12:40:33]

Description was changed from

==========
Use default header extension map in rtc_event_log2text

Use defaults if the header extension map is missing from the config.

BUG=webrtc:6399
==========

to

==========
Use default header extension map in rtc_event_log2text

Use defaults if the header extension map is missing from the config.

BUG=webrtc:6399

Review-Url: https://codereview.webrtc.org/2983283002
Cr-Commit-Position: refs/heads/master@{#19267}
Committed:
https://chromium.googlesource.com/external/webrtc/+/007d56229adb8933960bfb08a...
==========

[commit-bot: I haz the power, 2017-08-08 12:40:33]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/external/webrtc/+/007d56229adb8933960bfb08a...