[ios] Do not signal finish load if currentURL != lastRegisteredURL.

[ios] Do not signal finish load if currentURL != lastRegisteredURL.

If user navigates forward and then immidiately back the following
sequence of events happens:

1.) ForwardURL is registered for load
2.) BackURL is registered for load
3.) Loading is stopped and current web view URL is ForwardURL
4.) Did Finish Loading is called and current web view URL is BackURL

On step 3 web should not signal didFinishLoad if
current web view URL != last registered URL, because telling embedder
that load has finished for ForwardURL is false information.

BUG=629565
Committed: https://crrev.com/34984eef64a1363a53055e1e696e6a9c9eaefb33
Cr-Commit-Position: refs/heads/master@{#407686}

[Eugene But (OOO till 7-30), 2016-07-21 00:58:13]

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

[commit-bot: I haz the power, 2016-07-21 00:58:54]

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

[Eugene But (OOO till 7-30), 2016-07-21 00:59:02]

eugenebut@chromium.org changed reviewers:
+ kkhorimoto@chromium.org

[commit-bot: I haz the power, 2016-07-21 02:21:26]

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

[commit-bot: I haz the power, 2016-07-21 02:21:26]

Dry run: This issue passed the CQ dry run.

[kkhorimoto, 2016-07-26 00:48:43]

lgtm

[justincohen, 2016-07-26 01:39:46]

The CQ bit was checked by justincohen@chromium.org

[commit-bot: I haz the power, 2016-07-26 01:40:10]

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, 2016-07-26 02:15:54]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-26 02:19:11]

Description was changed from

==========
[ios] Do not signal finish load if currentURL != lastRegisteredURL.

If user navigates forward and then immidiately back the following
sequence of events happens:

1.) ForwardURL is registered for load
2.) BackURL is registered for load
3.) Loading is stopped and current web view URL is ForwardURL
4.) Did Finish Loading is called and current web view URL is BackURL

On step 3 web should not signal didFinishLoad if
current web view URL != last registered URL, because telling embedder
that load has finished for ForwardURL is false information.

BUG=629565
==========

to

==========
[ios] Do not signal finish load if currentURL != lastRegisteredURL.

If user navigates forward and then immidiately back the following
sequence of events happens:

1.) ForwardURL is registered for load
2.) BackURL is registered for load
3.) Loading is stopped and current web view URL is ForwardURL
4.) Did Finish Loading is called and current web view URL is BackURL

On step 3 web should not signal didFinishLoad if
current web view URL != last registered URL, because telling embedder
that load has finished for ForwardURL is false information.

BUG=629565

Committed: https://crrev.com/34984eef64a1363a53055e1e696e6a9c9eaefb33
Cr-Commit-Position: refs/heads/master@{#407686}
==========

[commit-bot: I haz the power, 2016-07-26 02:19:12]

Patchset 1 (id:??) landed as
https://crrev.com/34984eef64a1363a53055e1e696e6a9c9eaefb33
Cr-Commit-Position: refs/heads/master@{#407686}