Revert r6148: SerializeAllProcessors should not keep PROT_WRITE|PROT_EXEC page Reason: build is broken on Windows.
Revert r6148: SerializeAllProcessors should not keep PROT_WRITE|PROT_EXEC page
Reason: build is broken on Windows.

Original review: http://codereview.chromium.org/7413001/
Review URL: http://codereview.chromium.org/7471043

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@6150 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client