Revert of Move logic of recording main thread scrolling reasons from cc to blink::ScrollManager

Revert of Move logic of recording main thread scrolling reasons from cc to blink::ScrollManager (patchset #17 id:320001 of https://codereview.chromium.org/2773593005/ )

Reason for revert:
Likely cause of webkit_unit_tests failing on chromium.webkit/WebKit Android (Nexus4).

BUG=711190
Original issue's description:
> Move logic of recording main thread scrolling reasons from cc to 
> blink::ScrollManager
> 
> Due to crbug.com/701355, all style related main thread scrolling reasons
> stop being recorded. This patch moves the logic of storing the style
> related reasons to PLSA and move the recording logic to ScrollManager
> because the information on the compositor side is insufficient. The
> disabled test due to the previous bug has been enabled again with minor
> modification.
> 
> BUG=704805
> TEST=All/NonCompositedMainThreadScrollingReasonTest.*;
> EventHandlerTest.NonCompositedMainThreadScrollingReason*
> 
> CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
> master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
> master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
> 
> Review-Url: https://codereview.chromium.org/2773593005
> Cr-Commit-Position: refs/heads/master@{#464073}
> Committed: https://chromium.googlesource.com/chromium/src/+/76d0929033d6cd3ec36b96d1b4845166e70c9349

TBR=flackr@chromium.org,ajuma@chromium.org,bokan@chromium.org,tdresser@chromium.org,jwd@chromium.org,yigu@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=704805
Review-Url: https://codereview.chromium.org/2816973002
Cr-Commit-Position: refs/heads/master@{#464337}
Committed: https://chromium.googlesource.com/chromium/src/+/998f8e571bebd0ace499f8fef81f91daffada15f

[jdoerrie, 2017-04-13 08:09:17]

The CQ bit was checked by jdoerrie@chromium.org

[jdoerrie, 2017-04-13 08:09:17]

Created Revert of Move logic of recording main thread scrolling reasons from cc
to blink::ScrollManager

[commit-bot: I haz the power, 2017-04-13 08:09:47]

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, 2017-04-13 08:10:36]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1492070957451020, "parent_rev":
"1d72f2db0caadf203009ff249b8108daaa4ad8dd", "commit_rev":
"998f8e571bebd0ace499f8fef81f91daffada15f"}

[commit-bot: I haz the power, 2017-04-13 08:11:34]

Description was changed from

==========
Revert of Move logic of recording main thread scrolling reasons from cc to
blink::ScrollManager (patchset #17 id:320001 of
https://codereview.chromium.org/2773593005/ )

Reason for revert:
Likely cause of webkit_unit_tests failing on chromium.webkit/WebKit Android
(Nexus4).

BUG=711190


Original issue's description:
> Move logic of recording main thread scrolling reasons from cc to 
> blink::ScrollManager
> 
> Due to crbug.com/701355, all style related main thread scrolling reasons
> stop being recorded. This patch moves the logic of storing the style
> related reasons to PLSA and move the recording logic to ScrollManager
> because the information on the compositor side is insufficient. The
> disabled test due to the previous bug has been enabled again with minor
> modification.
> 
> BUG=704805
> TEST=All/NonCompositedMainThreadScrollingReasonTest.*;
> EventHandlerTest.NonCompositedMainThreadScrollingReason*
> 
>
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
> master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
> master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
> 
> Review-Url: https://codereview.chromium.org/2773593005
> Cr-Commit-Position: refs/heads/master@{#464073}
> Committed:
https://chromium.googlesource.com/chromium/src/+/76d0929033d6cd3ec36b96d1b484...

TBR=flackr@chromium.org,ajuma@chromium.org,bokan@chromium.org,tdresser@chromi...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=704805
==========

to

==========
Revert of Move logic of recording main thread scrolling reasons from cc to
blink::ScrollManager (patchset #17 id:320001 of
https://codereview.chromium.org/2773593005/ )

Reason for revert:
Likely cause of webkit_unit_tests failing on chromium.webkit/WebKit Android
(Nexus4).

BUG=711190


Original issue's description:
> Move logic of recording main thread scrolling reasons from cc to 
> blink::ScrollManager
> 
> Due to crbug.com/701355, all style related main thread scrolling reasons
> stop being recorded. This patch moves the logic of storing the style
> related reasons to PLSA and move the recording logic to ScrollManager
> because the information on the compositor side is insufficient. The
> disabled test due to the previous bug has been enabled again with minor
> modification.
> 
> BUG=704805
> TEST=All/NonCompositedMainThreadScrollingReasonTest.*;
> EventHandlerTest.NonCompositedMainThreadScrollingReason*
> 
>
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
> master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
> master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
> 
> Review-Url: https://codereview.chromium.org/2773593005
> Cr-Commit-Position: refs/heads/master@{#464073}
> Committed:
https://chromium.googlesource.com/chromium/src/+/76d0929033d6cd3ec36b96d1b484...

TBR=flackr@chromium.org,ajuma@chromium.org,bokan@chromium.org,tdresser@chromi...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=704805

Review-Url: https://codereview.chromium.org/2816973002
Cr-Commit-Position: refs/heads/master@{#464337}
Committed:
https://chromium.googlesource.com/chromium/src/+/998f8e571bebd0ace499f8fef81f...
==========

[commit-bot: I haz the power, 2017-04-13 08:11:35]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/998f8e571bebd0ace499f8fef81f...