[Tracing] Remove context_id in favor of traits

[Tracing] Remove context_id in favor of traits

This CL also changes on the ContextId function to become a BindId function, to allow easier integation with third_party tracing integration.

BUG=570851
Committed: https://crrev.com/e421277aa047bcbf61c965a57f1eb02dc1a582a2
Cr-Commit-Position: refs/heads/master@{#366123}

[fmeawad, 2015-12-17 23:49:13]

fmeawad@chromium.org changed reviewers:
+ oysteine@chromium.org

[fmeawad, 2015-12-17 23:49:13]

PTAL.

[fmeawad, 2015-12-17 23:49:18]

The CQ bit was checked by fmeawad@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-12-17 23:49:49]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1539703002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1539703002/1

[oystein (OOO til 10th of July), 2015-12-18 00:03:35]

lgtm, awesome :D

[fmeawad, 2015-12-18 00:06:37]

fmeawad@chromium.org changed reviewers:
+ pfeldman@chromium.org

[fmeawad, 2015-12-18 00:06:37]

+ pfeldman for content/child/blink_platform_impl.cc

[fmeawad, 2015-12-18 00:08:53]

The CQ bit was checked by fmeawad@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-12-18 00:12:27]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1539703002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1539703002/20001

[commit-bot: I haz the power, 2015-12-18 02:13:25]

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

[commit-bot: I haz the power, 2015-12-18 02:13:26]

Dry run: This issue passed the CQ dry run.

[pfeldman, 2015-12-18 17:56:32]

lgtm

[fmeawad, 2015-12-18 17:57:27]

The CQ bit was checked by fmeawad@chromium.org

[commit-bot: I haz the power, 2015-12-18 17:57:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1539703002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1539703002/20001

[commit-bot: I haz the power, 2015-12-18 18:04:26]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-12-18 18:05:09]

Description was changed from

==========
[Tracing] Remove context_id in favor of traits

This CL also changes on the ContextId function to become a BindId function, to
allow easier integation with third_party tracing integration.

BUG=570851
==========

to

==========
[Tracing] Remove context_id in favor of traits

This CL also changes on the ContextId function to become a BindId function, to
allow easier integation with third_party tracing integration.

BUG=570851

Committed: https://crrev.com/e421277aa047bcbf61c965a57f1eb02dc1a582a2
Cr-Commit-Position: refs/heads/master@{#366123}
==========

[commit-bot: I haz the power, 2015-12-18 18:05:10]

Patchset 2 (id:??) landed as
https://crrev.com/e421277aa047bcbf61c965a57f1eb02dc1a582a2
Cr-Commit-Position: refs/heads/master@{#366123}