We shouldn't show the open icon in save as dialog.

We should hide task button if this.dialogType_ !== DialogType.FULL_PAGE (this === TaskController).

https://cs.chromium.org/chromium/src/ui/file_manager/file_manager/foreground/js/task_controller.js?q=DialogType%5C.+case:yes+file:%5Esrc/ui/file_manager/file_manager/foreground/&sq=package:chromium&dr=C&l=297

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/88a01ea6624dcffe4257a05e79c56ccd5eb31849

commit 88a01ea6624dcffe4257a05e79c56ccd5eb31849
Author: oka <oka@chromium.org>
Date: Tue Jan 17 09:11:43 2017

Refactor Quick View controller.

Refactored the logic to fill parameters into quick view element
using switch instead of multiple if-s.
This is a preparation for the CL https://codereview.chromium.org/2634053002, which
shows open task button only when applicable.

BUG= 658448 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2631143002
Cr-Commit-Position: refs/heads/master@{#444009}

[modify] https://crrev.com/88a01ea6624dcffe4257a05e79c56ccd5eb31849/ui/file_manager/file_manager/foreground/js/quick_view_controller.js

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a9273bfae3e059a8b3d7448db387b3e8b3d7ff2d

commit a9273bfae3e059a8b3d7448db387b3e8b3d7ff2d
Author: oka <oka@chromium.org>
Date: Tue Jan 17 09:30:55 2017

Show open task button only when applicable.

In Quick View, the open task button should be shown only when
1. The dialog is full page mode, and
2. There is a task to open the file.
In this CL, hasTask property is added to files-quick-view element
and quick view controller sets it true only if 1 and 2 are satisfied.

BUG= 658448 
TEST=manually checked the following cases:
file type | volume   | has open button
--------------------------------------
image     | Download | yes
image     | Drive    | yes
folder    | Download | no
folder    | Drive    | no

CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2634053002
Cr-Commit-Position: refs/heads/master@{#444011}

[modify] https://crrev.com/a9273bfae3e059a8b3d7448db387b3e8b3d7ff2d/ui/file_manager/file_manager/foreground/elements/files_quick_view.html
[modify] https://crrev.com/a9273bfae3e059a8b3d7448db387b3e8b3d7ff2d/ui/file_manager/file_manager/foreground/elements/files_quick_view.js
[modify] https://crrev.com/a9273bfae3e059a8b3d7448db387b3e8b3d7ff2d/ui/file_manager/file_manager/foreground/js/file_manager.js
[modify] https://crrev.com/a9273bfae3e059a8b3d7448db387b3e8b3d7ff2d/ui/file_manager/file_manager/foreground/js/quick_view_controller.js

58.0.3007.0/9270.0.0