Revert of Enable Control Flow Integrity for the official Linux Chrome. Try 6.

Revert of Enable Control Flow Integrity for the official Linux Chrome. Try 6. (patchset #1 id:1 of https://codereview.chromium.org/1529993002/ )

Reason for revert:
Causes link to time out: https://chromegw.corp.google.com/i/official.desktop.continuous/builders/precise64%20trunk/builds/11345

Original issue's description:
> Enable Control Flow Integrity for the official Linux Chrome. Try 6.
> 
> 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 sixth attempt to land the CL. Previous attempts:
> https://codereview.chromium.org/1502373003/
> https://codereview.chromium.org/1501593003/
> https://codereview.chromium.org/1393283005/
> https://codereview.chromium.org/1502233004/
> https://codereview.chromium.org/1513623004/
> 
> The last time it failed, it was primarily due to the perf build slaves
> being much slower then the local build or other GCE slaves,
> see https://crbug.com/569732. This is still under investigation,
> and the timeout has been increased in the mean time:
> https://codereview.chromium.org/1528533003/
> 
> Committed: https://crrev.com/14cb7878cb522ad05480547690ec3990f4bbb156
> Cr-Commit-Position: refs/heads/master@{#365486}

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

[danakj, 2015-12-16 20:50:54]

Created Revert of Enable Control Flow Integrity for the official Linux Chrome.
Try 6.

[pcc1, 2015-12-16 20:51:50]

On 2015/12/16 20:50:54, danakj (behind on reviews) wrote:
> Created Revert of Enable Control Flow Integrity for the official Linux Chrome.
> Try 6.

We've already reverted in https://codereview.chromium.org/1532693002/

[commit-bot: I haz the power, 2015-12-16 20:52:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1532723002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1532723002/1

[danakj, 2015-12-16 20:52:59]

The CQ bit was unchecked by danakj@chromium.org

[danakj, 2015-12-16 20:53:08]

Ah, thanks

[danakj, 2015-12-16 20:53:13]

Description was changed from

==========
Revert of Enable Control Flow Integrity for the official Linux Chrome. Try 6.
(patchset #1 id:1 of https://codereview.chromium.org/1529993002/ )

Reason for revert:
Causes link to time out:
https://chromegw.corp.google.com/i/official.desktop.continuous/builders/preci...

Original issue's description:
> Enable Control Flow Integrity for the official Linux Chrome. Try 6.
> 
> 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 sixth attempt to land the CL. Previous attempts:
> https://codereview.chromium.org/1502373003/
> https://codereview.chromium.org/1501593003/
> https://codereview.chromium.org/1393283005/
> https://codereview.chromium.org/1502233004/
> https://codereview.chromium.org/1513623004/
> 
> The last time it failed, it was primarily due to the perf build slaves
> being much slower then the local build or other GCE slaves,
> see https://crbug.com/569732. This is still under investigation,
> and the timeout has been increased in the mean time:
> https://codereview.chromium.org/1528533003/
> 
> Committed: https://crrev.com/14cb7878cb522ad05480547690ec3990f4bbb156
> Cr-Commit-Position: refs/heads/master@{#365486}

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

to

==========
Revert of Enable Control Flow Integrity for the official Linux Chrome. Try 6.
(patchset #1 id:1 of https://codereview.chromium.org/1529993002/ )

Reason for revert:
Causes link to time out:
https://chromegw.corp.google.com/i/official.desktop.continuous/builders/preci...

Original issue's description:
> Enable Control Flow Integrity for the official Linux Chrome. Try 6.
> 
> 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 sixth attempt to land the CL. Previous attempts:
> https://codereview.chromium.org/1502373003/
> https://codereview.chromium.org/1501593003/
> https://codereview.chromium.org/1393283005/
> https://codereview.chromium.org/1502233004/
> https://codereview.chromium.org/1513623004/
> 
> The last time it failed, it was primarily due to the perf build slaves
> being much slower then the local build or other GCE slaves,
> see https://crbug.com/569732. This is still under investigation,
> and the timeout has been increased in the mean time:
> https://codereview.chromium.org/1528533003/
> 
> Committed: https://crrev.com/14cb7878cb522ad05480547690ec3990f4bbb156
> Cr-Commit-Position: refs/heads/master@{#365486}

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