Revert of Use <(DEPTH) instead of <(PRODUCT_DIR)/../../ for sanitizer blacklist paths.

Revert of Use <(DEPTH) instead of <(PRODUCT_DIR)/../../ for sanitizer blacklist paths. (patchset #2 id:20001 of https://codereview.chromium.org/633333003/)

Reason for revert:
This broke Windows bots, see http://build.chromium.org/p/chromium.webkit/builders/WebKit%20Win%20x64%20Builder/builds/22954/steps/runhooks/logs/stdio
There is no pwd command on windows.

Original issue's description:
> Use <(DEPTH) instead of <(PRODUCT_DIR)/../../ for sanitizer blacklist paths.
>
> It's not correct to assume that the build directory is two levels below src/.
>
> BUG=427202
> R=glider@chromium.org
> NOTRY=true
>
> Committed: https://crrev.com/dcb216595d483246a0979849f44a993f4d432c7f
> Cr-Commit-Position: refs/heads/master@{#301379}

TBR=glider@chromium.org,earthdok@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=427202
Committed: https://crrev.com/96244bb7e54ff3aa129097c6a6e576b8cf0cd3de
Cr-Commit-Position: refs/heads/master@{#301382}

[Fabrice (no longer in Chrome), 2014-10-27 16:51:33]

Created Revert of Use <(DEPTH) instead of <(PRODUCT_DIR)/../../ for sanitizer
blacklist paths.

[commit-bot: I haz the power, 2014-10-27 16:52:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/680913004/1

[commit-bot: I haz the power, 2014-10-27 16:52:59]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-10-27 16:52:59]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[pasko, 2014-10-27 16:54:54]

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

[pasko, 2014-10-27 16:54:54]

lgtm thanks!

[Fabrice (no longer in Chrome), 2014-10-27 16:55:21]

The CQ bit was checked by fdegans@chromium.org

[commit-bot: I haz the power, 2014-10-27 16:56:23]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/680913004/1

[commit-bot: I haz the power, 2014-10-27 16:57:51]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-27 16:58:35]

Patchset 1 (id:??) landed as
https://crrev.com/96244bb7e54ff3aa129097c6a6e576b8cf0cd3de
Cr-Commit-Position: refs/heads/master@{#301382}