Revert of Rename XMLHttpRequestProgressEventThrottle to ProgressEventThrottle

Revert of Rename XMLHttpRequestProgressEventThrottle to ProgressEventThrottle (patchset #1 id:1 of https://codereview.chromium.org/1690503002/ )

Reason for revert:
More discussion is needed about these class names.

Original issue's description:
> Rename XMLHttpRequestProgressEventThrottle to ProgressEventThrottle
>
> XMLHttpRequestProgressEvent is no more.
>
> BUG=357112
> R=chrishtr@chromium.org
>
> Committed: https://crrev.com/b252bda4c2fdefef8c4a8508b6c246573f0c7974
> Cr-Commit-Position: refs/heads/master@{#374683}

TBR=tyoshino@chromium.org,philipj@opera.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=357112
Committed: https://crrev.com/7d43953428579c3d482bb433168732408d50737e
Cr-Commit-Position: refs/heads/master@{#374906}

[chrishtr, 2016-02-11 16:07:12]

Created Revert of Rename XMLHttpRequestProgressEventThrottle to
ProgressEventThrottle

[commit-bot: I haz the power, 2016-02-11 16:07:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1686953006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1686953006/1

[commit-bot: I haz the power, 2016-02-11 16:10:17]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-02-16 22:35:49]

Description was changed from

==========
Revert of Rename XMLHttpRequestProgressEventThrottle to ProgressEventThrottle
(patchset #1 id:1 of https://codereview.chromium.org/1690503002/ )

Reason for revert:
More discussion is needed about these class names.

Original issue's description:
> Rename XMLHttpRequestProgressEventThrottle to ProgressEventThrottle
> 
> XMLHttpRequestProgressEvent is no more.
> 
> BUG=357112
> R=chrishtr@chromium.org
> 
> Committed: https://crrev.com/b252bda4c2fdefef8c4a8508b6c246573f0c7974
> Cr-Commit-Position: refs/heads/master@{#374683}

TBR=tyoshino@chromium.org,philipj@opera.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=357112
==========

to

==========
Revert of Rename XMLHttpRequestProgressEventThrottle to ProgressEventThrottle
(patchset #1 id:1 of https://codereview.chromium.org/1690503002/ )

Reason for revert:
More discussion is needed about these class names.

Original issue's description:
> Rename XMLHttpRequestProgressEventThrottle to ProgressEventThrottle
>
> XMLHttpRequestProgressEvent is no more.
>
> BUG=357112
> R=chrishtr@chromium.org
>
> Committed: https://crrev.com/b252bda4c2fdefef8c4a8508b6c246573f0c7974
> Cr-Commit-Position: refs/heads/master@{#374683}

TBR=tyoshino@chromium.org,philipj@opera.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=357112

Committed: https://crrev.com/7d43953428579c3d482bb433168732408d50737e
Cr-Commit-Position: refs/heads/master@{#374906}
==========

[commit-bot: I haz the power, 2016-02-16 22:35:50]

Patchset 1 (id:??) landed as
https://crrev.com/7d43953428579c3d482bb433168732408d50737e
Cr-Commit-Position: refs/heads/master@{#374906}