Sync XHR on Worker should not crash when response arrives immediately

Sync XHR on Worker should not crash when response arrives immediately

A WorkerThreadableLoader::MainThreadLoaderHolder instance is created on the
main thread and its reference is sent to the worker thread. The current
implementation sends the reference after the loading starts (on the main
thread), but it's problematic because the loading may exit immediately and
hence it breaks WorkerThreadableLoader::WaitableEventWithTasks's assumption.

BUG=637980
Committed: https://crrev.com/4f2cec77114821d5ff05041da5c6d969f6a16ab8
Cr-Commit-Position: refs/heads/master@{#414302}

[yhirano, 2016-08-17 01:57:45]

The CQ bit was checked by yhirano@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-08-17 01:57:58]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-08-17 03:08:36]

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

[commit-bot: I haz the power, 2016-08-17 03:08:37]

Dry run: Try jobs failed on following builders:
  linux_chromium_rel_ng on master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[yhirano, 2016-08-17 03:42:39]

yhirano@chromium.org changed reviewers:
+ hiroshige@chromium.org, mkwst@chromium.org

[hiroshige, 2016-08-17 07:48:56]

lgtm.

[yhirano, 2016-08-22 00:56:08]

yhirano@chromium.org changed reviewers:
+ japhet@chromium.org

[yhirano, 2016-08-22 00:56:08]

Mike is OOO. Nate, can you take a look?

[yhirano, 2016-08-23 08:15:27]

Description was changed from

==========
Sync XHR on Worker should not crash when response arrives immediately

A WorkerThreadableLoader::MainThreadLoaderHolder instance is created on the
main thread and its reference is sent to the worker thread. The current
implementation sends the reference after the loading starts (on the main
thread), but it's problematic because the loading may exit immediately and
hence it breaks WorkerThreadableLoader::WaitableEventWithTasks's assumption.

BUG=637890
==========

to

==========
Sync XHR on Worker should not crash when response arrives immediately

A WorkerThreadableLoader::MainThreadLoaderHolder instance is created on the
main thread and its reference is sent to the worker thread. The current
implementation sends the reference after the loading starts (on the main
thread), but it's problematic because the loading may exit immediately and
hence it breaks WorkerThreadableLoader::WaitableEventWithTasks's assumption.

BUG=637980
==========

[yhirano, 2016-08-24 13:33:46]

japhet@: ping

[Nate Chapin, 2016-08-24 16:11:25]

lgtm

[yhirano, 2016-08-24 17:10:10]

Thanks!

[yhirano, 2016-08-24 17:10:14]

The CQ bit was checked by yhirano@chromium.org

[commit-bot: I haz the power, 2016-08-24 17:10:43]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-08-24 18:33:30]

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

[commit-bot: I haz the power, 2016-08-24 18:33:31]

Try jobs failed on following builders:
  linux_chromium_rel_ng on master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[yhirano, 2016-08-25 00:23:29]

The CQ bit was checked by yhirano@chromium.org

[commit-bot: I haz the power, 2016-08-25 00:24:41]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-08-25 02:41:07]

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

[commit-bot: I haz the power, 2016-08-25 02:41:09]

Try jobs failed on following builders:
  mac_chromium_rel_ng on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)

[yhirano, 2016-08-25 02:55:00]

The CQ bit was checked by yhirano@chromium.org

[commit-bot: I haz the power, 2016-08-25 02:55:59]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-08-25 03:59:58]

Description was changed from

==========
Sync XHR on Worker should not crash when response arrives immediately

A WorkerThreadableLoader::MainThreadLoaderHolder instance is created on the
main thread and its reference is sent to the worker thread. The current
implementation sends the reference after the loading starts (on the main
thread), but it's problematic because the loading may exit immediately and
hence it breaks WorkerThreadableLoader::WaitableEventWithTasks's assumption.

BUG=637980
==========

to

==========
Sync XHR on Worker should not crash when response arrives immediately

A WorkerThreadableLoader::MainThreadLoaderHolder instance is created on the
main thread and its reference is sent to the worker thread. The current
implementation sends the reference after the loading starts (on the main
thread), but it's problematic because the loading may exit immediately and
hence it breaks WorkerThreadableLoader::WaitableEventWithTasks's assumption.

BUG=637980
==========

[commit-bot: I haz the power, 2016-08-25 03:59:59]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-25 04:03:19]

Description was changed from

==========
Sync XHR on Worker should not crash when response arrives immediately

A WorkerThreadableLoader::MainThreadLoaderHolder instance is created on the
main thread and its reference is sent to the worker thread. The current
implementation sends the reference after the loading starts (on the main
thread), but it's problematic because the loading may exit immediately and
hence it breaks WorkerThreadableLoader::WaitableEventWithTasks's assumption.

BUG=637980
==========

to

==========
Sync XHR on Worker should not crash when response arrives immediately

A WorkerThreadableLoader::MainThreadLoaderHolder instance is created on the
main thread and its reference is sent to the worker thread. The current
implementation sends the reference after the loading starts (on the main
thread), but it's problematic because the loading may exit immediately and
hence it breaks WorkerThreadableLoader::WaitableEventWithTasks's assumption.

BUG=637980

Committed: https://crrev.com/4f2cec77114821d5ff05041da5c6d969f6a16ab8
Cr-Commit-Position: refs/heads/master@{#414302}
==========

[commit-bot: I haz the power, 2016-08-25 04:03:21]

Patchset 1 (id:??) landed as
https://crrev.com/4f2cec77114821d5ff05041da5c6d969f6a16ab8
Cr-Commit-Position: refs/heads/master@{#414302}