Use IdTargetObserver in SVGSMILElement

Use IdTargetObserver in SVGSMILElement

Move SVGSMILElement (target reference) and SVGSMILElement::Condition to
use IdTargetObserver via SVGURIReference::observeTarget.
Simplify the result to avoid needing the lookupEventBase helper.

BUG=661598
Review-Url: https://codereview.chromium.org/2737403003
Cr-Commit-Position: refs/heads/master@{#456367}
Committed: https://chromium.googlesource.com/chromium/src/+/ef3b9727c297214c9a7093cdf51f92200d78140c

[fs, 2017-03-10 10:49:17]

The CQ bit was checked by fs@opera.com to run a CQ dry run

[commit-bot: I haz the power, 2017-03-10 10:49:26]

Dry run: 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, 2017-03-10 12:20:19]

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

[commit-bot: I haz the power, 2017-03-10 12:20:19]

Dry run: Try jobs failed on following builders:
  win_chromium_rel_ng on master.tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)

[fs, 2017-03-10 14:47:26]

The CQ bit was checked by fs@opera.com to run a CQ dry run

[commit-bot: I haz the power, 2017-03-10 14:47:37]

Dry run: 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, 2017-03-10 16:16:34]

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

[commit-bot: I haz the power, 2017-03-10 16:16:35]

Dry run: Try jobs failed on following builders:
  win_chromium_rel_ng on master.tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)

[fs, 2017-03-13 10:47:45]

The CQ bit was checked by fs@opera.com to run a CQ dry run

[commit-bot: I haz the power, 2017-03-13 10:47:52]

Dry run: 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, 2017-03-13 12:09:03]

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

[commit-bot: I haz the power, 2017-03-13 12:09:04]

Dry run: This issue passed the CQ dry run.

[fs, 2017-03-13 12:19:20]

fs@opera.com changed reviewers:
+ pdr@chromium.org, schenney@chromium.org

[Stephen Chennney, 2017-03-13 13:51:47]

The CQ bit was checked by schenney@chromium.org

[Stephen Chennney, 2017-03-13 13:51:48]

lgtm

[commit-bot: I haz the power, 2017-03-13 13:52:09]

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, 2017-03-13 13:57:04]

CQ is committing da patch.

Bot data: {"patchset_id": 40001, "attempt_start_ts": 1489413107398040,
"parent_rev": "2ce64fc7cd0fa0546926a832497d913f058a1e74", "commit_rev":
"ef3b9727c297214c9a7093cdf51f92200d78140c"}

[commit-bot: I haz the power, 2017-03-13 13:57:43]

Description was changed from

==========
Use IdTargetObserver in SVGSMILElement

Move SVGSMILElement (target reference) and SVGSMILElement::Condition to
use IdTargetObserver via SVGURIReference::observeTarget.
Simplify the result to avoid needing the lookupEventBase helper.

BUG=661598
==========

to

==========
Use IdTargetObserver in SVGSMILElement

Move SVGSMILElement (target reference) and SVGSMILElement::Condition to
use IdTargetObserver via SVGURIReference::observeTarget.
Simplify the result to avoid needing the lookupEventBase helper.

BUG=661598

Review-Url: https://codereview.chromium.org/2737403003
Cr-Commit-Position: refs/heads/master@{#456367}
Committed:
https://chromium.googlesource.com/chromium/src/+/ef3b9727c297214c9a7093cdf51f...
==========

[commit-bot: I haz the power, 2017-03-13 13:57:44]

Committed patchset #3 (id:40001) as
https://chromium.googlesource.com/chromium/src/+/ef3b9727c297214c9a7093cdf51f...