Revert of Change directory if the active list item on navigation list is changed.

Revert of Change directory if the active list item on navigation list is changed. (https://codereview.chromium.org/303503004/)

Reason for revert:
Added browser test broke Linux ChromiumOS Tests (dbg). This may be flakiness and I should investigate the reason before relanding

Original issue's description:
> Change directory if the active list item on navigation list is changed.
> 
> We want to change current directory if the active item on navigation list is changed.
> But we don't want to change current directory when listed items are spliced or permuted.
> In both cases, 'change' event is dispatched from selection model and we can't distinguish these cases from event itself.
> currentActiveItem_ is introduced to detect change of actual active item.
> 
> BUG=375663
> TEST=go through steps in Issue 375663 and 361047
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=273601

TBR=yoshiki@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=375663

[fukino, 2014-05-30 05:18:11]

Created Revert of Change directory if the active list item on navigation list is
changed.

[commit-bot: I haz the power, 2014-05-30 05:19:30]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/fukino@chromium.org/307053002/1

[commit-bot: I haz the power, 2014-05-30 05:19:31]

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

[commit-bot: I haz the power, 2014-05-30 05:19:31]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.