Revert of Refoctoring FileSelection and FileSelectionHandler.

Revert of Refoctoring FileSelection and FileSelectionHandler. (patchset #9 id:150001 of https://codereview.chromium.org/736663002/)

Reason for revert:
Causing failures on
https://build.chromium.org/p/chromium.chromiumos/builders/Linux%20ChromiumOS%20Tests%20%28dbg%29%281%29
SelectFileAndOpen
SelectFileAndSave

NOTRY=true
TBR=hirono

[detailed omitted; should've been sent by e-mail]

Committed: https://crrev.com/ed1db2487e833555b0a9862540a1fe44e225959b
Cr-Commit-Position: refs/heads/master@{#305121}

[Mark P, 2014-11-20 20:21:47]

Created Revert of Refoctoring FileSelection and FileSelectionHandler.

[commit-bot: I haz the power, 2014-11-20 20:22:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/749603002/1

[agable, 2014-11-21 00:26:36]

The CQ bit was unchecked by agable@chromium.org

[commit-bot: I haz the power, 2014-11-21 00:26:41]

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

[Mark P, 2014-11-21 00:27:18]

The CQ bit was checked by mpearson@chromium.org

[commit-bot: I haz the power, 2014-11-21 00:28:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/749603002/1

[commit-bot: I haz the power, 2014-11-21 00:28:28]

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

[commit-bot: I haz the power, 2014-11-21 00:28:29]

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,
_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.

[sheyang, 2014-11-21 00:28:54]

The CQ bit was unchecked by sheyang@chromium.org

[Mark P, 2014-11-21 00:30:05]

The CQ bit was checked by mpearson@chromium.org

[commit-bot: I haz the power, 2014-11-21 00:31:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/749603002/1

[agable, 2014-11-21 00:32:11]

On 2014/11/21 at 00:31:26, commit-bot wrote:
> CQ is trying da patch. Follow status at
>  https://chromium-cq-status.appspot.com/patch-status/749603002/1

Filed https://crbug.com/435386 to track why this wasn't making it through CQ.

[Mark P, 2014-11-21 00:32:55]

The CQ bit was unchecked by mpearson@chromium.org

[Mark P, 2014-11-21 00:33:10]

The CQ bit was checked by mpearson@chromium.org

[commit-bot: I haz the power, 2014-11-21 00:33:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/749603002/1

[commit-bot: I haz the power, 2014-11-21 00:34:55]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-11-21 00:35:40]

Patchset 1 (id:??) landed as
https://crrev.com/ed1db2487e833555b0a9862540a1fe44e225959b
Cr-Commit-Position: refs/heads/master@{#305121}