Update visual style of directory tree.

Update visual style of directory tree.

Main changes are:
- Layout change.
- Selected tree item's color is not inverted now.
- Use core-icon's preset icons for for subfolders.
- Add touch feedback.

BUG=402344
TEST=run browser_tests

Committed: https://crrev.com/9a8600ac6a908f33cc4d0e5dd2cf6885fc05c121
Cr-Commit-Position: refs/heads/master@{#313474}

[fukino, 2015-01-28 09:17:38]

fukino@chromium.org changed reviewers:
+ hirono@chromium.org

[fukino, 2015-01-28 09:17:39]

PTAL. Thanks!

[hirono, 2015-01-28 09:21:15]

lgtm with nits! Thanks!

https://codereview.chromium.org/884653002/diff/20001/ui/file_manager/file_man...
File ui/file_manager/file_manager/foreground/css/file_manager.css (left):

https://codereview.chromium.org/884653002/diff/20001/ui/file_manager/file_man...
ui/file_manager/file_manager/foreground/css/file_manager.css:276:
url(../images/files/ui/eject_white.png) 1x,
Can we remove these images?

https://codereview.chromium.org/884653002/diff/20001/ui/file_manager/file_man...
File ui/file_manager/file_manager/foreground/css/file_types.css (right):

https://codereview.chromium.org/884653002/diff/20001/ui/file_manager/file_man...
ui/file_manager/file_manager/foreground/css/file_types.css:347:
background-image: -webkit-image-set(
Can we use shorthand property 'background' ?

[fukino, 2015-01-28 09:32:17]

Thank you for quick review!

https://codereview.chromium.org/884653002/diff/20001/ui/file_manager/file_man...
File ui/file_manager/file_manager/foreground/css/file_types.css (right):

https://codereview.chromium.org/884653002/diff/20001/ui/file_manager/file_man...
ui/file_manager/file_manager/foreground/css/file_types.css:347:
background-image: -webkit-image-set(
On 2015/01/28 09:21:15, hirono wrote:
> Can we use shorthand property 'background' ?

As discussed offline, to avoid 14px twice and use same style with *:focus, I'll
keep this it as is.

[fukino, 2015-01-28 09:32:45]

https://codereview.chromium.org/884653002/diff/20001/ui/file_manager/file_man...
File ui/file_manager/file_manager/foreground/css/file_manager.css (left):

https://codereview.chromium.org/884653002/diff/20001/ui/file_manager/file_man...
ui/file_manager/file_manager/foreground/css/file_manager.css:276:
url(../images/files/ui/eject_white.png) 1x,
On 2015/01/28 09:21:14, hirono wrote:
> Can we remove these images?

Done.

[fukino, 2015-01-28 09:32:54]

The CQ bit was checked by fukino@chromium.org

[commit-bot: I haz the power, 2015-01-28 09:33:55]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/884653002/40001

[commit-bot: I haz the power, 2015-01-28 10:19:50]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-01-28 10:20:48]

Patchset 3 (id:??) landed as
https://crrev.com/9a8600ac6a908f33cc4d0e5dd2cf6885fc05c121
Cr-Commit-Position: refs/heads/master@{#313474}