Revert of Update V8 to version 4.5.56.

Revert of Update V8 to version 4.5.56. (patchset #1 id:1 of https://codereview.chromium.org/1182893005/)

Reason for revert:
Broke WebGL 2 conformance tests

Fatal error in ../../v8/src/ic/stub-cache.h, line 111
# Check failed: name->HasHashCode().

build chrome, run with --enable-unsafe-es3-apis

goto https://www.khronos.org/registry/webgl/sdk/tests/webgl-conformance-tests.html

select Version 2.0.0 (beta) in the dropbox, and run samplerobejct.html (may need to run twice)

Original issue's description:
> Update V8 to version 4.5.56.
>
> Summary of changes available at:
> https://chromium.googlesource.com/v8/v8/+log/fffc68e8..cb392cb0
>
> Please follow these instructions for assigning/CC'ing issues:
> https://code.google.com/p/v8-wiki/wiki/TriagingIssues
>
> TBR=hablich@chromium.org,machenbach@chromium.org,yangguo@chromium.org,vogelheim@chromium.org
>
> Committed: https://crrev.com/a08e761a4a4f5c863682a39e234b4ca3af170159
> Cr-Commit-Position: refs/heads/master@{#334571}

TBR=hablich@chromium.org,machenbach@chromium.org,vogelheim@chromium.org,yangguo@chromium.org,v8-autoroll@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/c892234df05c86f1c19d0f515c4b0fc2be5e287b
Cr-Commit-Position: refs/heads/master@{#334649}

[Zhenyao Mo, 2015-06-16 16:57:46]

Created Revert of Update V8 to version 4.5.56.

[commit-bot: I haz the power, 2015-06-16 16:59:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1189863003/1

[commit-bot: I haz the power, 2015-06-16 17:00:26]

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

[commit-bot: I haz the power, 2015-06-16 17:00:28]

Failed to apply patch for DEPS:
While running git apply --index -3 -p1;
  error: patch failed: DEPS:38
  error: repository lacks the necessary blob to fall back on 3-way merge.
  error: DEPS: patch does not apply

Patch:       DEPS
Index: DEPS
diff --git a/DEPS b/DEPS
index
361af7e03f72ef10c02ad93306867534574e4c54..00dd51ec0c7a7c4c06728dbd8e89e9f7bd1c321f
100644
--- a/DEPS
+++ b/DEPS
@@ -38,7 +38,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.
-  'v8_revision': 'cb392cb03a1d4ac89b6c1b8a67af9ea2740613f8',
+  'v8_revision': 'fffc68e8cae31678d198db13d72f92632b825bf5',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling swarming_client
   # and whatever else without interference from each other.

[Zhenyao Mo, 2015-06-16 18:47:01]

The CQ bit was checked by zmo@chromium.org

[commit-bot: I haz the power, 2015-06-16 18:47:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1189863003/40001

[commit-bot: I haz the power, 2015-06-16 18:50:10]

Committed patchset #2 (id:40001)

[commit-bot: I haz the power, 2015-06-16 18:51:43]

Patchset 2 (id:??) landed as
https://crrev.com/c892234df05c86f1c19d0f515c4b0fc2be5e287b
Cr-Commit-Position: refs/heads/master@{#334649}

[Michael Hablich, 2015-06-16 18:54:10]

On 2015/06/16 18:51:43, commit-bot: I haz the power wrote:
> Patchset 2 (id:??) landed as
> https://crrev.com/c892234df05c86f1c19d0f515c4b0fc2be5e287b
> Cr-Commit-Position: refs/heads/master@{#334649}

I closed the auto-roller until this is resolved.

[chromium-reviews, 2015-06-16 20:24:23]

FYI: One of the bots where this failed:
http://build.chromium.org/p/chromium.gpu/builders/Mac%20Retina%20Debug/builds...

On Tue, Jun 16, 2015 at 8:54 PM, <hablich@chromium.org> wrote:

> On 2015/06/16 18:51:43, commit-bot: I haz the power wrote:
>
>> Patchset 2 (id:??) landed as
>> https://crrev.com/c892234df05c86f1c19d0f515c4b0fc2be5e287b
>> Cr-Commit-Position: refs/heads/master@{#334649}
>>
>
> I closed the auto-roller until this is resolved.
>
> https://codereview.chromium.org/1189863003/
>



-- 
Michael Achenbach
V8 Test Engineer
Google Germany GmbH
Dienerstr. 12
80331 München
*----------------------------------------------
Registergericht und -nummer: Hamburg, HRB 86891
Sitz der Gesellschaft: Hamburg
Geschäftsführer: Graham Law, Katherine Stephens
----------------------------------------------

To unsubscribe from this group and stop receiving emails from it, send an email
to chromium-reviews+unsubscribe@chromium.org.

[Zhenyao Mo, 2015-06-16 20:26:04]

On 2015/06/16 20:24:23, chromium-reviews wrote:
> FYI: One of the bots where this failed:
>
http://build.chromium.org/p/chromium.gpu/builders/Mac%20Retina%20Debug/builds...

Thanks.  I also reproduced locally on my Linux machine with the instructions in
the CL description.  It's very easy to induce the assertion failure.

[chromium-reviews, 2015-06-16 21:15:49]

According to zmo, there's no trybot support yet. The tryjobs that I've sent
also doesn't repro with Yang's CL. But it looks to me as if those test are
run:
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...

The test that failed here
http://build.chromium.org/p/chromium.gpu/builders/Mac%20Retina%20Debug/builds...
ran on that trybot. Or is this some different configuration?

I assume the trybot uses dchecks_always_on - but maybe we need a real debug
build.

On Tue, Jun 16, 2015 at 10:26 PM, <zmo@chromium.org> wrote:

> On 2015/06/16 20:24:23, chromium-reviews wrote:
>
>> FYI: One of the bots where this failed:
>>
>
>
>
http://build.chromium.org/p/chromium.gpu/builders/Mac%20Retina%20Debug/builds...
>
> Thanks.  I also reproduced locally on my Linux machine with the
> instructions in
> the CL description.  It's very easy to induce the assertion failure.
>
> https://codereview.chromium.org/1189863003/
>



-- 
Michael Achenbach
V8 Test Engineer
Google Germany GmbH
Dienerstr. 12
80331 München
*----------------------------------------------
Registergericht und -nummer: Hamburg, HRB 86891
Sitz der Gesellschaft: Hamburg
Geschäftsführer: Graham Law, Katherine Stephens
----------------------------------------------

To unsubscribe from this group and stop receiving emails from it, send an email
to chromium-reviews+unsubscribe@chromium.org.

[chromium-reviews, 2015-06-16 21:18:54]

FYI: Also on the linux trybot that landed the v8 roll, this test failed
once:
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...

So, repro'ing on the trybot should be possible, though flaky.

On Tue, Jun 16, 2015 at 11:15 PM, Michael Achenbach <machenbach@google.com>
wrote:

> According to zmo, there's no trybot support yet. The tryjobs that I've
> sent also doesn't repro with Yang's CL. But it looks to me as if those test
> are run:
>
>
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...
>
> The test that failed here
>
http://build.chromium.org/p/chromium.gpu/builders/Mac%20Retina%20Debug/builds...
> ran on that trybot. Or is this some different configuration?
>
> I assume the trybot uses dchecks_always_on - but maybe we need a real
> debug build.
>
> On Tue, Jun 16, 2015 at 10:26 PM, <zmo@chromium.org> wrote:
>
>> On 2015/06/16 20:24:23, chromium-reviews wrote:
>>
>>> FYI: One of the bots where this failed:
>>>
>>
>>
>>
http://build.chromium.org/p/chromium.gpu/builders/Mac%20Retina%20Debug/builds...
>>
>> Thanks.  I also reproduced locally on my Linux machine with the
>> instructions in
>> the CL description.  It's very easy to induce the assertion failure.
>>
>> https://codereview.chromium.org/1189863003/
>>
>
>
>
> --
> Michael Achenbach
> V8 Test Engineer
> Google Germany GmbH
> Dienerstr. 12
> 80331 München
> *----------------------------------------------
> Registergericht und -nummer: Hamburg, HRB 86891
> Sitz der Gesellschaft: Hamburg
> Geschäftsführer: Graham Law, Katherine Stephens
> ----------------------------------------------
>



-- 
Michael Achenbach
V8 Test Engineer
Google Germany GmbH
Dienerstr. 12
80331 München
*----------------------------------------------
Registergericht und -nummer: Hamburg, HRB 86891
Sitz der Gesellschaft: Hamburg
Geschäftsführer: Graham Law, Katherine Stephens
----------------------------------------------

To unsubscribe from this group and stop receiving emails from it, send an email
to chromium-reviews+unsubscribe@chromium.org.

[chromium-reviews, 2015-06-16 21:20:28]

FYI: Some repro attempts: https://codereview.chromium.org/1188903002/

Logging off from here...

On Tue, Jun 16, 2015 at 11:18 PM, Michael Achenbach <machenbach@google.com>
wrote:

> FYI: Also on the linux trybot that landed the v8 roll, this test failed
> once:
>
>
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...
>
> So, repro'ing on the trybot should be possible, though flaky.
>
> On Tue, Jun 16, 2015 at 11:15 PM, Michael Achenbach <machenbach@google.com
> > wrote:
>
>> According to zmo, there's no trybot support yet. The tryjobs that I've
>> sent also doesn't repro with Yang's CL. But it looks to me as if those test
>> are run:
>>
>>
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...
>>
>> The test that failed here
>>
http://build.chromium.org/p/chromium.gpu/builders/Mac%20Retina%20Debug/builds...
>> ran on that trybot. Or is this some different configuration?
>>
>> I assume the trybot uses dchecks_always_on - but maybe we need a real
>> debug build.
>>
>> On Tue, Jun 16, 2015 at 10:26 PM, <zmo@chromium.org> wrote:
>>
>>> On 2015/06/16 20:24:23, chromium-reviews wrote:
>>>
>>>> FYI: One of the bots where this failed:
>>>>
>>>
>>>
>>>
http://build.chromium.org/p/chromium.gpu/builders/Mac%20Retina%20Debug/builds...
>>>
>>> Thanks.  I also reproduced locally on my Linux machine with the
>>> instructions in
>>> the CL description.  It's very easy to induce the assertion failure.
>>>
>>> https://codereview.chromium.org/1189863003/
>>>
>>
>>
>>
>> --
>> Michael Achenbach
>> V8 Test Engineer
>> Google Germany GmbH
>> Dienerstr. 12
>> 80331 München
>> *----------------------------------------------
>> Registergericht und -nummer: Hamburg, HRB 86891
>> Sitz der Gesellschaft: Hamburg
>> Geschäftsführer: Graham Law, Katherine Stephens
>> ----------------------------------------------
>>
>
>
>
> --
> Michael Achenbach
> V8 Test Engineer
> Google Germany GmbH
> Dienerstr. 12
> 80331 München
> *----------------------------------------------
> Registergericht und -nummer: Hamburg, HRB 86891
> Sitz der Gesellschaft: Hamburg
> Geschäftsführer: Graham Law, Katherine Stephens
> ----------------------------------------------
>



-- 
Michael Achenbach
V8 Test Engineer
Google Germany GmbH
Dienerstr. 12
80331 München
*----------------------------------------------
Registergericht und -nummer: Hamburg, HRB 86891
Sitz der Gesellschaft: Hamburg
Geschäftsführer: Graham Law, Katherine Stephens
----------------------------------------------

To unsubscribe from this group and stop receiving emails from it, send an email
to chromium-reviews+unsubscribe@chromium.org.