Revert of Roll GYP 2c1e6cc:70fa8bb

Revert of Roll GYP 2c1e6cc:70fa8bb (patchset #1 id:1 of https://codereview.chromium.org/1444643003/ )

Reason for revert:
Causing grief on bots.

Original issue's description:
> Roll GYP 2c1e6cc:70fa8bb
>
> This rolls GYP to the latest commit in its repo. The primary
> reason for the roll is to pick up the change to the analyzer
> logic in 70fa8bb, but this picks up a few more changes along the way:
>
>   70fa8bb Changes semantics of analyzer
>   f54bd19 Adds back lookup of 'all' targets
>   2dd620e Attempt again to upstream Xcode project version warning
>     suppression, from 1416453003 and 1430573009, and rolled back in
>     1423583004.
>   0f5bae1 Change CMAKE_SOURCE_DIR to CMAKE_CURRENT_LIST_DIR
>
> BUG=552146
> TBR=aharper@chromium.org,ilewis@google.com,dpranke@chromium.org
> R=dpranke@chromium.org
>
> Committed: https://crrev.com/8b15a0583a53ce885f8bfeeb0f1cb8b2e617913c
> Cr-Commit-Position: refs/heads/master@{#359579}

TBR=aharper@chromium.org,dpranke@chromium.org,ilewis@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=552146
Committed: https://crrev.com/df02a0d9ecf2f7d8ece797d9a4edf0fc8041e03d
Cr-Commit-Position: refs/heads/master@{#359590}

[sky, 2015-11-13 18:40:58]

Created Revert of Roll GYP 2c1e6cc:70fa8bb

[commit-bot: I haz the power, 2015-11-13 18:42:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1446533002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1446533002/1

[commit-bot: I haz the power, 2015-11-13 18:44:17]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-13 18:45:10]

Patchset 1 (id:??) landed as
https://crrev.com/df02a0d9ecf2f7d8ece797d9a4edf0fc8041e03d
Cr-Commit-Position: refs/heads/master@{#359590}