Revert of Enable Control Flow Integrity for the official Linux Chrome.

Revert of Enable Control Flow Integrity for the official Linux Chrome. (patchset #1 id:1 of https://codereview.chromium.org/1502233004/ )

Reason for revert:
Broken at clang trunk (http://crbug.com/568121)

Original issue's description:
> Enable Control Flow Integrity for the official Linux Chrome.
>
> This CL turns on CFI, a security check:
> https://sites.google.com/a/chromium.org/dev/developers/testing/control-flow-integrity
> http://clang.llvm.org/docs/ControlFlowIntegrity.html
>
> This feature enables LTO (Link-Time Optimization) builds, which slow down the linker by 3x-4x.
> CFI also comes with a code size overhead of about 7%-9%. The runtime CPU cost is less than 1%,
> and should not be an issue.
>
> BUG=chromium:464797
> Intent to Implement thread:
> https://groups.google.com/a/chromium.org/d/msg/chromium-dev/pbJqt6ccMII/7iJC2oklCAAJ
>
> This is a fourth attempt to land the CL. Previous attempts:
> https://codereview.chromium.org/1502373003/
> https://codereview.chromium.org/1501593003/
> https://codereview.chromium.org/1393283005/
>
> The last time it failed, it was https://crbug.com/567637
> (mismatched deps expectations for the installer).
> Fixing the expectations.
>
> Committed: https://crrev.com/64719eadd90a3131a744baa89a1183bdcb1e2375
> Cr-Commit-Position: refs/heads/master@{#363895}

TBR=thestig@chromium.org,krasin@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:464797
Committed: https://crrev.com/1be865f6b9edf39aaeba57750b33abc305f8ae0e
Cr-Commit-Position: refs/heads/master@{#364068}

[Nico, 2015-12-09 15:25:08]

Created Revert of Enable Control Flow Integrity for the official Linux Chrome.

[commit-bot: I haz the power, 2015-12-09 15:25:51]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1517443002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1517443002/1

[commit-bot: I haz the power, 2015-12-09 15:27:36]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-12-09 15:32:31]

Description was changed from

==========
Revert of Enable Control Flow Integrity for the official Linux Chrome. (patchset
#1 id:1 of https://codereview.chromium.org/1502233004/ )

Reason for revert:
Broken at clang trunk (http://crbug.com/568121)

Original issue's description:
> Enable Control Flow Integrity for the official Linux Chrome.
> 
> This CL turns on CFI, a security check:
>
https://sites.google.com/a/chromium.org/dev/developers/testing/control-flow-i...
> http://clang.llvm.org/docs/ControlFlowIntegrity.html
> 
> This feature enables LTO (Link-Time Optimization) builds, which slow down the
linker by 3x-4x.
> CFI also comes with a code size overhead of about 7%-9%. The runtime CPU cost
is less than 1%,
> and should not be an issue.
> 
> BUG=chromium:464797
> Intent to Implement thread:
>
https://groups.google.com/a/chromium.org/d/msg/chromium-dev/pbJqt6ccMII/7iJC2...
> 
> This is a fourth attempt to land the CL. Previous attempts:
> https://codereview.chromium.org/1502373003/
> https://codereview.chromium.org/1501593003/
> https://codereview.chromium.org/1393283005/
> 
> The last time it failed, it was https://crbug.com/567637
> (mismatched deps expectations for the installer).
> Fixing the expectations.
> 
> Committed: https://crrev.com/64719eadd90a3131a744baa89a1183bdcb1e2375
> Cr-Commit-Position: refs/heads/master@{#363895}

TBR=thestig@chromium.org,krasin@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:464797
==========

to

==========
Revert of Enable Control Flow Integrity for the official Linux Chrome. (patchset
#1 id:1 of https://codereview.chromium.org/1502233004/ )

Reason for revert:
Broken at clang trunk (http://crbug.com/568121)

Original issue's description:
> Enable Control Flow Integrity for the official Linux Chrome.
>
> This CL turns on CFI, a security check:
>
https://sites.google.com/a/chromium.org/dev/developers/testing/control-flow-i...
> http://clang.llvm.org/docs/ControlFlowIntegrity.html
>
> This feature enables LTO (Link-Time Optimization) builds, which slow down the
linker by 3x-4x.
> CFI also comes with a code size overhead of about 7%-9%. The runtime CPU cost
is less than 1%,
> and should not be an issue.
>
> BUG=chromium:464797
> Intent to Implement thread:
>
https://groups.google.com/a/chromium.org/d/msg/chromium-dev/pbJqt6ccMII/7iJC2...
>
> This is a fourth attempt to land the CL. Previous attempts:
> https://codereview.chromium.org/1502373003/
> https://codereview.chromium.org/1501593003/
> https://codereview.chromium.org/1393283005/
>
> The last time it failed, it was https://crbug.com/567637
> (mismatched deps expectations for the installer).
> Fixing the expectations.
>
> Committed: https://crrev.com/64719eadd90a3131a744baa89a1183bdcb1e2375
> Cr-Commit-Position: refs/heads/master@{#363895}

TBR=thestig@chromium.org,krasin@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:464797

Committed: https://crrev.com/1be865f6b9edf39aaeba57750b33abc305f8ae0e
Cr-Commit-Position: refs/heads/master@{#364068}
==========

[commit-bot: I haz the power, 2015-12-09 15:32:32]

Patchset 1 (id:??) landed as
https://crrev.com/1be865f6b9edf39aaeba57750b33abc305f8ae0e
Cr-Commit-Position: refs/heads/master@{#364068}

[krasin, 2015-12-09 18:57:05]

lgtm

LGTM