Fix that switch "--disk-cache-dir" has no effect when specifying a path containing non-ascii charac…

Fix that switch "--disk-cache-dir" has no effect when specifying a path containing non-ascii characters.

The kDiskCacheDir(disk-cache-dir) has a *path* value, not a string that only contains ascii characters. We should use GetSwitchValuePath() to get its value instead of GetSwitchValueASCII().

R=bauerb@chromium.org
BUG=410676
Committed: https://crrev.com/e85f5c68ba2514eab50abc2fabcca6e946d10a2e
Cr-Commit-Position: refs/heads/master@{#294534}

[rvargas (doing something else), 2014-09-09 23:36:03]

rvargas@chromium.org changed reviewers:
+ mnissler@chromium.org
- rvargas@chromium.org

[rvargas (doing something else), 2014-09-09 23:37:08]

rvargas@chromium.org changed reviewers:
+ bauerb@chromium.org
- mnissler@chromium.org

[rvargas (doing something else), 2014-09-09 23:38:01]

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

[rvargas (doing something else), 2014-09-09 23:38:02]

(switch reviewers)

[rvargas (doing something else), 2014-09-09 23:38:36]

rvargas@chromium.org changed reviewers:
- rvargas@chromium.org

[Bernhard Bauer, 2014-09-10 09:27:23]

LGTM, thanks!

[leiyi.jp, 2014-09-11 01:02:19]

The CQ bit was checked by leiyi.jp@gmail.com

[leiyi.jp, 2014-09-11 01:02:19]

The CQ bit was unchecked by leiyi.jp@gmail.com

[leiyi.jp, 2014-09-11 01:02:24]

The CQ bit was checked by leiyi.jp@gmail.com

[leiyi.jp, 2014-09-11 01:02:29]

The CQ bit was unchecked by leiyi.jp@gmail.com

[leiyi.jp, 2014-09-12 01:56:31]

The CQ bit was checked by leiyi.jp@gmail.com

[leiyi.jp, 2014-09-12 01:56:41]

The CQ bit was unchecked by leiyi.jp@gmail.com

[leiyi.jp, 2014-09-12 01:59:52]

The CQ bit was checked by leiyi.jp@gmail.com

[leiyi.jp, 2014-09-12 02:00:21]

The CQ bit was unchecked by leiyi.jp@gmail.com

[leiyi.jp, 2014-09-12 02:01:30]

The CQ bit was checked by leiyi.jp@gmail.com

[commit-bot: I haz the power, 2014-09-12 02:03:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/545033002/1

[commit-bot: I haz the power, 2014-09-12 03:25:34]

Committed patchset #1 (id:1) as cdf8689d45f83dae4ea680555cf822641b407e42

[commit-bot: I haz the power, 2014-09-12 03:28:16]

Patchset 1 (id:??) landed as
https://crrev.com/e85f5c68ba2514eab50abc2fabcca6e946d10a2e
Cr-Commit-Position: refs/heads/master@{#294534}