Reland of Add EnabledStateObserver to BackgroundTracingManager

Reland of Add EnabledStateObserver to BackgroundTracingManager (patchset #1 id:1 of https://codereview.chromium.org/2785663002/ )

Reason for revert:
|config_| can be null. So, do not dereference it.

Original issue's description:
> Revert of Add EnabledStateObserver to BackgroundTracingManager (patchset #3 id:130001 of https://codereview.chromium.org/2769963005/ )
> 
> Reason for revert:
> This CL causes tests failures (browser_side_navigation_content_browsertests, content_browsertests, site_per_process_content_browsertests). 
> 
> https://findit-for-me.appspot.com/waterfall/build-failure?url=https://build.chromium.org/p/chromium.chromiumos/builders/Linux%20ChromiumOS%20Tests%20%28dbg%29%281%29/builds/24171
> 
> Original issue's description:
> > Add EnabledStateObserver to BackgroundTracingManager
> > 
> > This CL removes the memory-infra related code into memory-tracing
> > observer. Also the tests implement the observer instead of setting
> > callbacks.
> > 
> > BUG=700245
> > 
> > Review-Url: https://codereview.chromium.org/2769963005
> > Cr-Commit-Position: refs/heads/master@{#460293}
> > Committed: https://chromium.googlesource.com/chromium/src/+/f64ac5cb273e3abab3564f1a5997b3da164ab9ff
> 
> TBR=oysteine@chromium.org,alexmos@chromium.org,ssid@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=700245
> 
> Review-Url: https://codereview.chromium.org/2785663002
> Cr-Commit-Position: refs/heads/master@{#460343}
> Committed: https://chromium.googlesource.com/chromium/src/+/88d07c763d35621da2c62b9f18822109bbd7a261

TBR=alexmos@chromium.org,kolos@chromium.org
BUG=700245
Review-Url: https://codereview.chromium.org/2782933002
Cr-Commit-Position: refs/heads/master@{#460542}
Committed: https://chromium.googlesource.com/chromium/src/+/eb549628eb3e134f66bebea123a27d89dcf43dbb

[ssid, 2017-03-29 17:50:21]

Created Reland of Add EnabledStateObserver to BackgroundTracingManager

[ssid, 2017-03-29 17:50:52]

Description was changed from

==========
Reland of Add EnabledStateObserver to BackgroundTracingManager (patchset #1 id:1
of https://codereview.chromium.org/2785663002/ )

Reason for revert:
|config_| can be null. So, do not dereference it.

Original issue's description:
> Revert of Add EnabledStateObserver to BackgroundTracingManager (patchset #3
id:130001 of https://codereview.chromium.org/2769963005/ )
> 
> Reason for revert:
> This CL causes tests failures (browser_side_navigation_content_browsertests,
content_browsertests, site_per_process_content_browsertests). 
> 
>
https://findit-for-me.appspot.com/waterfall/build-failure?url=https://build.c...
> 
> Original issue's description:
> > Add EnabledStateObserver to BackgroundTracingManager
> > 
> > This CL removes the memory-infra related code into memory-tracing
> > observer. Also the tests implement the observer instead of setting
> > callbacks.
> > 
> > BUG=700245
> > 
> > Review-Url: https://codereview.chromium.org/2769963005
> > Cr-Commit-Position: refs/heads/master@{#460293}
> > Committed:
https://chromium.googlesource.com/chromium/src/+/f64ac5cb273e3abab3564f1a5997...
> 
> TBR=oysteine@chromium.org,alexmos@chromium.org,ssid@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=700245
> 
> Review-Url: https://codereview.chromium.org/2785663002
> Cr-Commit-Position: refs/heads/master@{#460343}
> Committed:
https://chromium.googlesource.com/chromium/src/+/88d07c763d35621da2c62b9f1882...

TBR=oysteine@chromium.org,alexmos@chromium.org,kolos@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=700245
==========

to

==========
Reland of Add EnabledStateObserver to BackgroundTracingManager (patchset #1 id:1
of https://codereview.chromium.org/2785663002/ )

Reason for revert:
|config_| can be null. So, do not dereference it.

Original issue's description:
> Revert of Add EnabledStateObserver to BackgroundTracingManager (patchset #3
id:130001 of https://codereview.chromium.org/2769963005/ )
> 
> Reason for revert:
> This CL causes tests failures (browser_side_navigation_content_browsertests,
content_browsertests, site_per_process_content_browsertests). 
> 
>
https://findit-for-me.appspot.com/waterfall/build-failure?url=https://build.c...
> 
> Original issue's description:
> > Add EnabledStateObserver to BackgroundTracingManager
> > 
> > This CL removes the memory-infra related code into memory-tracing
> > observer. Also the tests implement the observer instead of setting
> > callbacks.
> > 
> > BUG=700245
> > 
> > Review-Url: https://codereview.chromium.org/2769963005
> > Cr-Commit-Position: refs/heads/master@{#460293}
> > Committed:
https://chromium.googlesource.com/chromium/src/+/f64ac5cb273e3abab3564f1a5997...
> 
> TBR=oysteine@chromium.org,alexmos@chromium.org,ssid@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=700245
> 
> Review-Url: https://codereview.chromium.org/2785663002
> Cr-Commit-Position: refs/heads/master@{#460343}
> Committed:
https://chromium.googlesource.com/chromium/src/+/88d07c763d35621da2c62b9f1882...

TBR=alexmos@chromium.org,kolos@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
BUG=700245
==========

[ssid, 2017-03-29 17:53:17]

Oystein ptal, thanks!

[oystein (OOO til 10th of July), 2017-03-29 17:58:39]

lgtm

[ssid, 2017-03-29 18:03:29]

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

[commit-bot: I haz the power, 2017-03-29 18:04:11]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[ssid, 2017-03-29 20:38:20]

Description was changed from

==========
Reland of Add EnabledStateObserver to BackgroundTracingManager (patchset #1 id:1
of https://codereview.chromium.org/2785663002/ )

Reason for revert:
|config_| can be null. So, do not dereference it.

Original issue's description:
> Revert of Add EnabledStateObserver to BackgroundTracingManager (patchset #3
id:130001 of https://codereview.chromium.org/2769963005/ )
> 
> Reason for revert:
> This CL causes tests failures (browser_side_navigation_content_browsertests,
content_browsertests, site_per_process_content_browsertests). 
> 
>
https://findit-for-me.appspot.com/waterfall/build-failure?url=https://build.c...
> 
> Original issue's description:
> > Add EnabledStateObserver to BackgroundTracingManager
> > 
> > This CL removes the memory-infra related code into memory-tracing
> > observer. Also the tests implement the observer instead of setting
> > callbacks.
> > 
> > BUG=700245
> > 
> > Review-Url: https://codereview.chromium.org/2769963005
> > Cr-Commit-Position: refs/heads/master@{#460293}
> > Committed:
https://chromium.googlesource.com/chromium/src/+/f64ac5cb273e3abab3564f1a5997...
> 
> TBR=oysteine@chromium.org,alexmos@chromium.org,ssid@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=700245
> 
> Review-Url: https://codereview.chromium.org/2785663002
> Cr-Commit-Position: refs/heads/master@{#460343}
> Committed:
https://chromium.googlesource.com/chromium/src/+/88d07c763d35621da2c62b9f1882...

TBR=alexmos@chromium.org,kolos@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
BUG=700245
==========

to

==========
Reland of Add EnabledStateObserver to BackgroundTracingManager (patchset #1 id:1
of https://codereview.chromium.org/2785663002/ )

Reason for revert:
|config_| can be null. So, do not dereference it.

Original issue's description:
> Revert of Add EnabledStateObserver to BackgroundTracingManager (patchset #3
id:130001 of https://codereview.chromium.org/2769963005/ )
> 
> Reason for revert:
> This CL causes tests failures (browser_side_navigation_content_browsertests,
content_browsertests, site_per_process_content_browsertests). 
> 
>
https://findit-for-me.appspot.com/waterfall/build-failure?url=https://build.c...
> 
> Original issue's description:
> > Add EnabledStateObserver to BackgroundTracingManager
> > 
> > This CL removes the memory-infra related code into memory-tracing
> > observer. Also the tests implement the observer instead of setting
> > callbacks.
> > 
> > BUG=700245
> > 
> > Review-Url: https://codereview.chromium.org/2769963005
> > Cr-Commit-Position: refs/heads/master@{#460293}
> > Committed:
https://chromium.googlesource.com/chromium/src/+/f64ac5cb273e3abab3564f1a5997...
> 
> TBR=oysteine@chromium.org,alexmos@chromium.org,ssid@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=700245
> 
> Review-Url: https://codereview.chromium.org/2785663002
> Cr-Commit-Position: refs/heads/master@{#460343}
> Committed:
https://chromium.googlesource.com/chromium/src/+/88d07c763d35621da2c62b9f1882...

TBR=alexmos@chromium.org,kolos@chromium.org
BUG=700245
==========

[commit-bot: I haz the power, 2017-03-29 21:31:07]

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

[commit-bot: I haz the power, 2017-03-29 21:31:08]

Dry run: This issue passed the CQ dry run.

[ssid, 2017-03-29 21:37:23]

The CQ bit was checked by ssid@chromium.org

[commit-bot: I haz the power, 2017-03-29 21:38:40]

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

[commit-bot: I haz the power, 2017-03-29 21:46:07]

CQ is committing da patch.

Bot data: {"patchset_id": 190001, "attempt_start_ts": 1490823443971750,
"parent_rev": "b2f307761e5a1ab5793aafd3f659712f24fb0cea", "commit_rev":
"eb549628eb3e134f66bebea123a27d89dcf43dbb"}

[commit-bot: I haz the power, 2017-03-29 21:46:53]

Description was changed from

==========
Reland of Add EnabledStateObserver to BackgroundTracingManager (patchset #1 id:1
of https://codereview.chromium.org/2785663002/ )

Reason for revert:
|config_| can be null. So, do not dereference it.

Original issue's description:
> Revert of Add EnabledStateObserver to BackgroundTracingManager (patchset #3
id:130001 of https://codereview.chromium.org/2769963005/ )
> 
> Reason for revert:
> This CL causes tests failures (browser_side_navigation_content_browsertests,
content_browsertests, site_per_process_content_browsertests). 
> 
>
https://findit-for-me.appspot.com/waterfall/build-failure?url=https://build.c...
> 
> Original issue's description:
> > Add EnabledStateObserver to BackgroundTracingManager
> > 
> > This CL removes the memory-infra related code into memory-tracing
> > observer. Also the tests implement the observer instead of setting
> > callbacks.
> > 
> > BUG=700245
> > 
> > Review-Url: https://codereview.chromium.org/2769963005
> > Cr-Commit-Position: refs/heads/master@{#460293}
> > Committed:
https://chromium.googlesource.com/chromium/src/+/f64ac5cb273e3abab3564f1a5997...
> 
> TBR=oysteine@chromium.org,alexmos@chromium.org,ssid@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=700245
> 
> Review-Url: https://codereview.chromium.org/2785663002
> Cr-Commit-Position: refs/heads/master@{#460343}
> Committed:
https://chromium.googlesource.com/chromium/src/+/88d07c763d35621da2c62b9f1882...

TBR=alexmos@chromium.org,kolos@chromium.org
BUG=700245
==========

to

==========
Reland of Add EnabledStateObserver to BackgroundTracingManager (patchset #1 id:1
of https://codereview.chromium.org/2785663002/ )

Reason for revert:
|config_| can be null. So, do not dereference it.

Original issue's description:
> Revert of Add EnabledStateObserver to BackgroundTracingManager (patchset #3
id:130001 of https://codereview.chromium.org/2769963005/ )
> 
> Reason for revert:
> This CL causes tests failures (browser_side_navigation_content_browsertests,
content_browsertests, site_per_process_content_browsertests). 
> 
>
https://findit-for-me.appspot.com/waterfall/build-failure?url=https://build.c...
> 
> Original issue's description:
> > Add EnabledStateObserver to BackgroundTracingManager
> > 
> > This CL removes the memory-infra related code into memory-tracing
> > observer. Also the tests implement the observer instead of setting
> > callbacks.
> > 
> > BUG=700245
> > 
> > Review-Url: https://codereview.chromium.org/2769963005
> > Cr-Commit-Position: refs/heads/master@{#460293}
> > Committed:
https://chromium.googlesource.com/chromium/src/+/f64ac5cb273e3abab3564f1a5997...
> 
> TBR=oysteine@chromium.org,alexmos@chromium.org,ssid@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=700245
> 
> Review-Url: https://codereview.chromium.org/2785663002
> Cr-Commit-Position: refs/heads/master@{#460343}
> Committed:
https://chromium.googlesource.com/chromium/src/+/88d07c763d35621da2c62b9f1882...

TBR=alexmos@chromium.org,kolos@chromium.org
BUG=700245

Review-Url: https://codereview.chromium.org/2782933002
Cr-Commit-Position: refs/heads/master@{#460542}
Committed:
https://chromium.googlesource.com/chromium/src/+/eb549628eb3e134f66bebea123a2...
==========

[commit-bot: I haz the power, 2017-03-29 21:46:54]

Committed patchset #2 (id:190001) as
https://chromium.googlesource.com/chromium/src/+/eb549628eb3e134f66bebea123a2...