file_manager: Do not return ARC tasks if a directory is selected

file_manager: Do not return ARC tasks if a directory is selected

When the selection includes a directory, no ARC tasks should be returned.

BUG=627679
TEST=Cannot open a directory with ARC apps

Review-Url: https://codereview.chromium.org/2141373002
Cr-Commit-Position: refs/heads/master@{#405075}
(cherry picked from commit 4699a16ee722fae35760559e179c7a4f8a53b1f0)

Committed: https://chromium.googlesource.com/chromium/src/+/a0108dd709f996e6316672283f9c9e8dde350d9e

[hashimoto, 2016-07-15 03:43:23]

Description was changed from

==========
file_manager: Do not return ARC tasks if a directory is selected

When the selection includes a directory, no ARC tasks should be returned.

BUG=627679
TEST=Cannot open a directory with ARC apps

Review-Url: https://codereview.chromium.org/2141373002
Cr-Commit-Position: refs/heads/master@{#405075}
(cherry picked from commit 4699a16ee722fae35760559e179c7a4f8a53b1f0)
==========

to

==========
file_manager: Do not return ARC tasks if a directory is selected

When the selection includes a directory, no ARC tasks should be returned.

BUG=627679
TEST=Cannot open a directory with ARC apps

Review-Url: https://codereview.chromium.org/2141373002
Cr-Commit-Position: refs/heads/master@{#405075}
(cherry picked from commit 4699a16ee722fae35760559e179c7a4f8a53b1f0)

Committed:
https://chromium.googlesource.com/chromium/src/+/a0108dd709f996e6316672283f9c...
==========

[hashimoto, 2016-07-15 03:43:25]

Committed patchset #1 (id:1) manually as
a0108dd709f996e6316672283f9c9e8dde350d9e.