Reland of [elements] Minor hardening and cleanup of concat

Reland of [elements] Minor hardening and cleanup of concat (patchset #1 id:1 of https://codereview.chromium.org/1825363002/ )

Reason for revert:
Test disabled. See:
https://codereview.chromium.org/1830583002/

Original issue's description:
> Revert of [elements] Minor hardening and cleanup of concat (patchset #7 id:120001 of https://codereview.chromium.org/1812753004/ )
>
> Reason for revert:
> [Sheriff] Something seems to leak:
> https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20ASAN/builds/10838
>
> I don't see the direct connection to this CL though...
>
> Original issue's description:
> > [elements] Minor hardening and cleanup of concat
> >
> > BUG=
> >
> > Committed: https://crrev.com/b98b3fbbe3dd14548cb356339f52403c07ef33f4
> > Cr-Commit-Position: refs/heads/master@{#35027}
>
> TBR=jkummerow@chromium.org,cbruni@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=
>
> Committed: https://crrev.com/d30d861a0cb0da11efd3b30eb3d03fbe56b4ba23
> Cr-Commit-Position: refs/heads/master@{#35028}

TBR=jkummerow@chromium.org,cbruni@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
BUG=

Committed: https://crrev.com/1ac34fadd082a06248fbe69c6f564ed8acf3057a
Cr-Commit-Position: refs/heads/master@{#35038}

[Michael Achenbach, 2016-03-23 16:09:05]

Created Reland of [elements] Minor hardening and cleanup of concat

[Michael Achenbach, 2016-03-23 16:09:19]

Description was changed from

==========
Reland of [elements] Minor hardening and cleanup of concat (patchset #1 id:1 of
https://codereview.chromium.org/1825363002/ )

Reason for revert:
Test disabled. See:
https://codereview.chromium.org/1830583002/

Original issue's description:
> Revert of [elements] Minor hardening and cleanup of concat (patchset #7
id:120001 of https://codereview.chromium.org/1812753004/ )
> 
> Reason for revert:
> [Sheriff] Something seems to leak:
>
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20ASAN/builds/10838
> 
> I don't see the direct connection to this CL though...
> 
> Original issue's description:
> > [elements] Minor hardening and cleanup of concat
> >
> > BUG=
> >
> > Committed: https://crrev.com/b98b3fbbe3dd14548cb356339f52403c07ef33f4
> > Cr-Commit-Position: refs/heads/master@{#35027}
> 
> TBR=jkummerow@chromium.org,cbruni@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=
> 
> Committed: https://crrev.com/d30d861a0cb0da11efd3b30eb3d03fbe56b4ba23
> Cr-Commit-Position: refs/heads/master@{#35028}

TBR=jkummerow@chromium.org,cbruni@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=
==========

to

==========
Reland of [elements] Minor hardening and cleanup of concat (patchset #1 id:1 of
https://codereview.chromium.org/1825363002/ )

Reason for revert:
Test disabled. See:
https://codereview.chromium.org/1830583002/

Original issue's description:
> Revert of [elements] Minor hardening and cleanup of concat (patchset #7
id:120001 of https://codereview.chromium.org/1812753004/ )
> 
> Reason for revert:
> [Sheriff] Something seems to leak:
>
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20ASAN/builds/10838
> 
> I don't see the direct connection to this CL though...
> 
> Original issue's description:
> > [elements] Minor hardening and cleanup of concat
> >
> > BUG=
> >
> > Committed: https://crrev.com/b98b3fbbe3dd14548cb356339f52403c07ef33f4
> > Cr-Commit-Position: refs/heads/master@{#35027}
> 
> TBR=jkummerow@chromium.org,cbruni@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=
> 
> Committed: https://crrev.com/d30d861a0cb0da11efd3b30eb3d03fbe56b4ba23
> Cr-Commit-Position: refs/heads/master@{#35028}

TBR=jkummerow@chromium.org,cbruni@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
BUG=
==========

[Michael Achenbach, 2016-03-23 16:09:23]

The CQ bit was checked by machenbach@chromium.org

[commit-bot: I haz the power, 2016-03-23 16:09:32]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1827573003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1827573003/1

[commit-bot: I haz the power, 2016-03-23 16:30:29]

Description was changed from

==========
Reland of [elements] Minor hardening and cleanup of concat (patchset #1 id:1 of
https://codereview.chromium.org/1825363002/ )

Reason for revert:
Test disabled. See:
https://codereview.chromium.org/1830583002/

Original issue's description:
> Revert of [elements] Minor hardening and cleanup of concat (patchset #7
id:120001 of https://codereview.chromium.org/1812753004/ )
> 
> Reason for revert:
> [Sheriff] Something seems to leak:
>
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20ASAN/builds/10838
> 
> I don't see the direct connection to this CL though...
> 
> Original issue's description:
> > [elements] Minor hardening and cleanup of concat
> >
> > BUG=
> >
> > Committed: https://crrev.com/b98b3fbbe3dd14548cb356339f52403c07ef33f4
> > Cr-Commit-Position: refs/heads/master@{#35027}
> 
> TBR=jkummerow@chromium.org,cbruni@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=
> 
> Committed: https://crrev.com/d30d861a0cb0da11efd3b30eb3d03fbe56b4ba23
> Cr-Commit-Position: refs/heads/master@{#35028}

TBR=jkummerow@chromium.org,cbruni@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
BUG=
==========

to

==========
Reland of [elements] Minor hardening and cleanup of concat (patchset #1 id:1 of
https://codereview.chromium.org/1825363002/ )

Reason for revert:
Test disabled. See:
https://codereview.chromium.org/1830583002/

Original issue's description:
> Revert of [elements] Minor hardening and cleanup of concat (patchset #7
id:120001 of https://codereview.chromium.org/1812753004/ )
> 
> Reason for revert:
> [Sheriff] Something seems to leak:
>
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20ASAN/builds/10838
> 
> I don't see the direct connection to this CL though...
> 
> Original issue's description:
> > [elements] Minor hardening and cleanup of concat
> >
> > BUG=
> >
> > Committed: https://crrev.com/b98b3fbbe3dd14548cb356339f52403c07ef33f4
> > Cr-Commit-Position: refs/heads/master@{#35027}
> 
> TBR=jkummerow@chromium.org,cbruni@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=
> 
> Committed: https://crrev.com/d30d861a0cb0da11efd3b30eb3d03fbe56b4ba23
> Cr-Commit-Position: refs/heads/master@{#35028}

TBR=jkummerow@chromium.org,cbruni@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
BUG=
==========

[commit-bot: I haz the power, 2016-03-23 16:30:30]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-23 16:32:01]

Description was changed from

==========
Reland of [elements] Minor hardening and cleanup of concat (patchset #1 id:1 of
https://codereview.chromium.org/1825363002/ )

Reason for revert:
Test disabled. See:
https://codereview.chromium.org/1830583002/

Original issue's description:
> Revert of [elements] Minor hardening and cleanup of concat (patchset #7
id:120001 of https://codereview.chromium.org/1812753004/ )
> 
> Reason for revert:
> [Sheriff] Something seems to leak:
>
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20ASAN/builds/10838
> 
> I don't see the direct connection to this CL though...
> 
> Original issue's description:
> > [elements] Minor hardening and cleanup of concat
> >
> > BUG=
> >
> > Committed: https://crrev.com/b98b3fbbe3dd14548cb356339f52403c07ef33f4
> > Cr-Commit-Position: refs/heads/master@{#35027}
> 
> TBR=jkummerow@chromium.org,cbruni@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=
> 
> Committed: https://crrev.com/d30d861a0cb0da11efd3b30eb3d03fbe56b4ba23
> Cr-Commit-Position: refs/heads/master@{#35028}

TBR=jkummerow@chromium.org,cbruni@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
BUG=
==========

to

==========
Reland of [elements] Minor hardening and cleanup of concat (patchset #1 id:1 of
https://codereview.chromium.org/1825363002/ )

Reason for revert:
Test disabled. See:
https://codereview.chromium.org/1830583002/

Original issue's description:
> Revert of [elements] Minor hardening and cleanup of concat (patchset #7
id:120001 of https://codereview.chromium.org/1812753004/ )
>
> Reason for revert:
> [Sheriff] Something seems to leak:
>
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20ASAN/builds/10838
>
> I don't see the direct connection to this CL though...
>
> Original issue's description:
> > [elements] Minor hardening and cleanup of concat
> >
> > BUG=
> >
> > Committed: https://crrev.com/b98b3fbbe3dd14548cb356339f52403c07ef33f4
> > Cr-Commit-Position: refs/heads/master@{#35027}
>
> TBR=jkummerow@chromium.org,cbruni@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=
>
> Committed: https://crrev.com/d30d861a0cb0da11efd3b30eb3d03fbe56b4ba23
> Cr-Commit-Position: refs/heads/master@{#35028}

TBR=jkummerow@chromium.org,cbruni@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
BUG=

Committed: https://crrev.com/1ac34fadd082a06248fbe69c6f564ed8acf3057a
Cr-Commit-Position: refs/heads/master@{#35038}
==========

[commit-bot: I haz the power, 2016-03-23 16:32:02]

Patchset 1 (id:??) landed as
https://crrev.com/1ac34fadd082a06248fbe69c6f564ed8acf3057a
Cr-Commit-Position: refs/heads/master@{#35038}