Revert of scheduler: Detect single event gestures correctly

Revert of scheduler: Detect single event gestures correctly (patchset #3 id:40001 of https://codereview.chromium.org/2663283002/ )

Reason for revert:
Caused a test build break.

Original issue's description:
> scheduler: Detect single event gestures correctly
> 
> When a single event gesture such as a press (i.e., a single touchstart
> event) is observed, the scheduler would previously wait for two
> subsequent touchmove events before deciding the gesture was established
> and stop blocking tasks unrelated to input handling. The problem was
> that with single event gestures, these additional events are never sent,
> so the scheduler would remain in 'touchstart' mode for 100ms, possibly
> causing important tasks to get delayed.
> 
> This patch fixes the issue by telling the scheduler how the touchstart
> event was handled. If the event handler calls preventDefault() on the
> event, the scheduler can immediately conclude that the gesture is
> handled by the main thread without waiting for any further events. If
> preventDefault() is not called, we maintain the previous behavior.
> 
> BUG=639300
> TBR=dtapuska@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2661443003
> Cr-Commit-Position: refs/heads/master@{#446921}
> (cherry picked from commit cff6288fd965f274205ca6ab9cded462ba204dc9)
> 
> Review-Url: https://codereview.chromium.org/2663283002 .
> Cr-Commit-Position: refs/branch-heads/2987@{#230}
> Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
> Committed: https://chromium.googlesource.com/chromium/src/+/6db2c563baa4b5d4dbd4bbb052db0003ea5a0f1e

TBR=dtapuska@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=639300
Review-Url: https://codereview.chromium.org/2662173005
Cr-Commit-Position: refs/branch-heads/2987@{#233}
Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed: https://chromium.googlesource.com/chromium/src/+/dae9cdcdccded3723dbcf1d8a0d4d7b05a91b3ca

[Sami, 2017-01-31 21:10:21]

The CQ bit was checked by skyostil@chromium.org

[Sami, 2017-01-31 21:10:21]

Created Revert of scheduler: Detect single event gestures correctly

[commit-bot: I haz the power, 2017-01-31 21:11:11]

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, 2017-01-31 21:12:26]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1485897021034130, "parent_rev":
"7d9ff70b10562cd6723939a6cb7e777abaa0c4e0", "commit_rev":
"dae9cdcdccded3723dbcf1d8a0d4d7b05a91b3ca"}

[commit-bot: I haz the power, 2017-01-31 21:13:10]

Description was changed from

==========
Revert of scheduler: Detect single event gestures correctly (patchset #3
id:40001 of https://codereview.chromium.org/2663283002/ )

Reason for revert:
Caused a test build break.

Original issue's description:
> scheduler: Detect single event gestures correctly
> 
> When a single event gesture such as a press (i.e., a single touchstart
> event) is observed, the scheduler would previously wait for two
> subsequent touchmove events before deciding the gesture was established
> and stop blocking tasks unrelated to input handling. The problem was
> that with single event gestures, these additional events are never sent,
> so the scheduler would remain in 'touchstart' mode for 100ms, possibly
> causing important tasks to get delayed.
> 
> This patch fixes the issue by telling the scheduler how the touchstart
> event was handled. If the event handler calls preventDefault() on the
> event, the scheduler can immediately conclude that the gesture is
> handled by the main thread without waiting for any further events. If
> preventDefault() is not called, we maintain the previous behavior.
> 
> BUG=639300
> TBR=dtapuska@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2661443003
> Cr-Commit-Position: refs/heads/master@{#446921}
> (cherry picked from commit cff6288fd965f274205ca6ab9cded462ba204dc9)
> 
> Review-Url: https://codereview.chromium.org/2663283002 .
> Cr-Commit-Position: refs/branch-heads/2987@{#230}
> Cr-Branched-From:
ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
> Committed:
https://chromium.googlesource.com/chromium/src/+/6db2c563baa4b5d4dbd4bbb052db...

TBR=dtapuska@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=639300
==========

to

==========
Revert of scheduler: Detect single event gestures correctly (patchset #3
id:40001 of https://codereview.chromium.org/2663283002/ )

Reason for revert:
Caused a test build break.

Original issue's description:
> scheduler: Detect single event gestures correctly
> 
> When a single event gesture such as a press (i.e., a single touchstart
> event) is observed, the scheduler would previously wait for two
> subsequent touchmove events before deciding the gesture was established
> and stop blocking tasks unrelated to input handling. The problem was
> that with single event gestures, these additional events are never sent,
> so the scheduler would remain in 'touchstart' mode for 100ms, possibly
> causing important tasks to get delayed.
> 
> This patch fixes the issue by telling the scheduler how the touchstart
> event was handled. If the event handler calls preventDefault() on the
> event, the scheduler can immediately conclude that the gesture is
> handled by the main thread without waiting for any further events. If
> preventDefault() is not called, we maintain the previous behavior.
> 
> BUG=639300
> TBR=dtapuska@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2661443003
> Cr-Commit-Position: refs/heads/master@{#446921}
> (cherry picked from commit cff6288fd965f274205ca6ab9cded462ba204dc9)
> 
> Review-Url: https://codereview.chromium.org/2663283002 .
> Cr-Commit-Position: refs/branch-heads/2987@{#230}
> Cr-Branched-From:
ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
> Committed:
https://chromium.googlesource.com/chromium/src/+/6db2c563baa4b5d4dbd4bbb052db...

TBR=dtapuska@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=639300

Review-Url: https://codereview.chromium.org/2662173005
Cr-Commit-Position: refs/branch-heads/2987@{#233}
Cr-Branched-From:
ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed:
https://chromium.googlesource.com/chromium/src/+/dae9cdcdccded3723dbcf1d8a0d4...
==========

[commit-bot: I haz the power, 2017-01-31 21:13:12]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/dae9cdcdccded3723dbcf1d8a0d4...