Files.app: Expand paddings of breadcrumbs.

Files.app: Expand padding of breadcrumbs.

This CL expands padding of breadcrumbs from 5px to 9px.
Along with it, some padding are reduced to keep the overall layout.

BUG=480720
TEST=manually

Committed: https://crrev.com/f65f6d7767a2a44c5b42f82db9e56f9a67816359
Cr-Commit-Position: refs/heads/master@{#330054}

[fukino, 2015-05-15 03:53:15]

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

[fukino, 2015-05-15 03:53:15]

PTAL. Thanks!

[yawano, 2015-05-15 04:49:00]

lgtm. Thank you!

[fukino, 2015-05-15 06:20:59]

On 2015/05/15 04:49:00, yawano wrote:
> lgtm. Thank you!

Thanks!

[fukino, 2015-05-15 06:21:04]

The CQ bit was checked by fukino@chromium.org

[commit-bot: I haz the power, 2015-05-15 06:21:21]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1128023006/20001

[commit-bot: I haz the power, 2015-05-15 06:48:51]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-05-15 06:49:41]

Patchset 2 (id:??) landed as
https://crrev.com/f65f6d7767a2a44c5b42f82db9e56f9a67816359
Cr-Commit-Position: refs/heads/master@{#330054}