[refactor] - Use WebContents::FindFrameByFrameTreeNodeId() instead of manually searching all frames.

[refactor] - Use WebContents::FindFrameByFrameTreeNodeId() instead of manually searching all frames.

This CL removes a manual for-loop and replaces it with the public API
specified for this purpose.

BUG=NONE

Review-Url: https://codereview.chromium.org/2858143002
Cr-Commit-Position: refs/heads/master@{#469245}
Committed: https://chromium.googlesource.com/chromium/src/+/ba08eba0840cb3067a741650c0ffbc234c5f2515

[EhsanK, 2017-05-03 22:39:22]

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

[commit-bot: I haz the power, 2017-05-03 22:39:41]

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, 2017-05-04 00:09:33]

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

[commit-bot: I haz the power, 2017-05-04 00:09:34]

Dry run: This issue passed the CQ dry run.

[EhsanK, 2017-05-04 00:14:30]

ekaramad@chromium.org changed reviewers:
+ lazyboy@chromium.org

[EhsanK, 2017-05-04 00:14:30]

PTAL. Thanks!

[lazyboy, 2017-05-04 01:27:55]

lgtm, thanks!

[EhsanK, 2017-05-04 01:58:22]

The CQ bit was checked by ekaramad@chromium.org

[commit-bot: I haz the power, 2017-05-04 01:58:43]

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, 2017-05-04 02:03:41]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1493863102597620, "parent_rev":
"ef6060998139cc4f7f12cf2f78ccf8a260c673c2", "commit_rev":
"ba08eba0840cb3067a741650c0ffbc234c5f2515"}

[commit-bot: I haz the power, 2017-05-04 02:03:54]

Description was changed from

==========
[refactor] - Use WebContents::FindFrameByFrameTreeNodeId() instead of manually
searching all frames.

This CL removes a manual for-loop and replaces it with the public API
specified for this purpose.

BUG=NONE
==========

to

==========
[refactor] - Use WebContents::FindFrameByFrameTreeNodeId() instead of manually
searching all frames.

This CL removes a manual for-loop and replaces it with the public API
specified for this purpose.

BUG=NONE

Review-Url: https://codereview.chromium.org/2858143002
Cr-Commit-Position: refs/heads/master@{#469245}
Committed:
https://chromium.googlesource.com/chromium/src/+/ba08eba0840cb3067a741650c0ff...
==========

[commit-bot: I haz the power, 2017-05-04 02:03:55]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/ba08eba0840cb3067a741650c0ff...