Revert of Soft fail for invalid cache data.

Revert of Soft fail for invalid cache data. (patchset #2 id:20001 of https://codereview.chromium.org/724023002/)

Reason for revert:
Build bots break due to memory leak.

Original issue's description:
> Soft fail for invalid cache data.
> 
> API=ScriptCompiler::CachedData::rejected
> LOG=Y
> R=vogelheim@google.com, vogelheim@chromium.org
> 
> Committed: https://chromium.googlesource.com/v8/v8/+/eafce666f49f13011849b6c0c40b271676ec91cf

TBR=vogelheim@google.com,yangguo@chromium.org
NOTREECHECKS=true
NOTRY=true

[vogelheim, 2014-11-13 16:35:59]

Created Revert of Soft fail for invalid cache data.

[commit-bot: I haz the power, 2014-11-13 16:36:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/724083003/1

[commit-bot: I haz the power, 2014-11-13 16:36:35]

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

[commit-bot: I haz the power, 2014-11-13 16:36:36]

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,
_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.