Revert of Add button to add new FSP services to Files app.

Revert of Add button to add new FSP services to Files app. (patchset #8 id:140001 of https://codereview.chromium.org/1056433003/)

Reason for revert:
Broke the build:
http://build.chromium.org/p/chromium.fyi/builders/Closure%20Compilation%20Linux/builds/18940

## /mnt/data/b/build/slave/Closure_Compilation_Linux/build/src/ui/file_manager/file_manager/foreground/js/navigation_list_model.js:33: ERROR - NavigationModelShortcutItem cannot extend this type; structs can only extend structs
## function NavigationModelShortcutItem(label, entry) {

Original issue's description:
> Add button to add new FSP services to Files app.
>
> This CL adds a FSP suggest dialog which can be shown by clicking the button at
> the end of the left nav.
>
> TEST=Tested manually by clicking on the new button in the left nav.
> BUG=471722
TBR=hirono@chromium.org,mtomasz@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=471722
Committed: https://crrev.com/698a1525a28f2875f171495f78012ab872e8e7a2
Cr-Commit-Position: refs/heads/master@{#323556}

[mfomitchev, 2015-04-02 20:26:32]

Created Revert of Add button to add new FSP services to Files app.

[commit-bot: I haz the power, 2015-04-02 20:30:08]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1058873004/1

[commit-bot: I haz the power, 2015-04-02 20:38:13]

Committed patchset #1 (id:1)

[Dan Beam, 2015-04-02 21:22:25]

dbeam@chromium.org changed reviewers:
+ dbeam@chromium.org

[Dan Beam, 2015-04-02 21:22:26]

for what it's worth: it's up to your team whether to revert on closure
compilation failure, but I often just attempt to fix.

[mfomitchev, 2015-04-02 21:59:53]

On 2015/04/02 21:22:26, Dan Beam wrote:
> for what it's worth: it's up to your team whether to revert on closure
> compilation failure, but I often just attempt to fix.

I reverted it (as a sheriff). This generated a "closing the tree" email, so I
assumed it was a serious enough issue. Is it not?

[Dan Beam, 2015-04-02 22:23:13]

On 2015/04/02 21:59:53, mfomitchev wrote:
> On 2015/04/02 21:22:26, Dan Beam wrote:
> > for what it's worth: it's up to your team whether to revert on closure
> > compilation failure, but I often just attempt to fix.
> 
> I reverted it (as a sheriff). This generated a "closing the tree" email, so I
> assumed it was a serious enough issue. Is it not?

it closed the FYI tree (not the main tree).

sorry that this is confusing.

[commit-bot: I haz the power, 2015-04-03 20:28:49]

Patchset 1 (id:??) landed as
https://crrev.com/698a1525a28f2875f171495f78012ab872e8e7a2
Cr-Commit-Position: refs/heads/master@{#323556}