Revert of Re-enable DCHECK for pointertypes of coalesced events

Revert of Re-enable DCHECK for pointertypes of coalesced events (patchset #1 id:1 of https://codereview.chromium.org/2688793003/ )

Reason for revert:
Caused flakiness of WebRtcFromWebAccessibleResourceTest.GetUserMediaInWebAccessibleResourceFail

https://chromium-try-flakes.appspot.com/all_flake_occurrences?key=ahVzfmNocm9taXVtLXRyeS1mbGFrZXNyVgsSBUZsYWtlIktXZWJSdGNGcm9tV2ViQWNjZXNzaWJsZVJlc291cmNlVGVzdC5HZXRVc2VyTWVkaWFJbldlYkFjY2Vzc2libGVSZXNvdXJjZUZhaWwM

Original issue's description:
> Re-enable DCHECK for pointertypes of coalesced events
> 
> The modified DCHECK was failing on MAC when mouse was
> leaving window due to the missing pointer type from
> the event Chrome was receiveing from the OS. So we
> were setting the pointerType to Unknown.
> After the following fix:
> https://chromium.googlesource.com/chromium/src/+/e97eb52977dd7ed3936227f0d240cfeed865e520
> we have a heuristic in place to set the type to either
> pen or mouse. So this DCHECK can be enabled again.
> 
> BUG=684292
> 
> Review-Url: https://codereview.chromium.org/2688793003
> Cr-Commit-Position: refs/heads/master@{#450075}
> Committed: https://chromium.googlesource.com/chromium/src/+/6b4cb83ed1e58193e8f3935ff406ce0ddb6310c6

TBR=mustaq@chromium.org,bokan@chromium.org,rbyers@chromium.org,nzolghadr@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=684292
Review-Url: https://codereview.chromium.org/2706513002
Cr-Commit-Position: refs/heads/master@{#451427}
Committed: https://chromium.googlesource.com/chromium/src/+/47542d73322fa629f5d02975b7a2694089b28a58

[alph, 2017-02-17 19:35:08]

The CQ bit was checked by alph@chromium.org

[alph, 2017-02-17 19:35:08]

Created Revert of Re-enable DCHECK for pointertypes of coalesced events

[commit-bot: I haz the power, 2017-02-17 19:36:11]

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, 2017-02-17 20:38:42]

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

[commit-bot: I haz the power, 2017-02-17 20:38:42]

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

[alph, 2017-02-17 21:44:01]

The CQ bit was checked by alph@chromium.org

[commit-bot: I haz the power, 2017-02-17 21:45:03]

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, 2017-02-17 23:47:28]

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

[commit-bot: I haz the power, 2017-02-17 23:47:29]

Try jobs failed on following builders:
  cast_shell_linux on master.tryserver.chromium.linux (JOB_TIMED_OUT, no build
URL)

[alph, 2017-02-18 00:05:51]

The CQ bit was checked by alph@chromium.org

[commit-bot: I haz the power, 2017-02-18 00:07:19]

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, 2017-02-18 02:11:35]

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

[commit-bot: I haz the power, 2017-02-18 02:11:36]

Try jobs failed on following builders:
  chromium_presubmit on master.tryserver.chromium.linux (JOB_TIMED_OUT, no build
URL)

[alph, 2017-02-18 05:43:03]

The CQ bit was checked by alph@chromium.org

[commit-bot: I haz the power, 2017-02-18 05:43:28]

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, 2017-02-18 06:25:44]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1487396583357640, "parent_rev":
"6e3c903599a2816c4a7c68eccd4e95b35e1f9893", "commit_rev":
"47542d73322fa629f5d02975b7a2694089b28a58"}

[commit-bot: I haz the power, 2017-02-18 06:26:18]

Description was changed from

==========
Revert of Re-enable DCHECK for pointertypes of coalesced events (patchset #1
id:1 of https://codereview.chromium.org/2688793003/ )

Reason for revert:
Caused flakiness of
WebRtcFromWebAccessibleResourceTest.GetUserMediaInWebAccessibleResourceFail

https://chromium-try-flakes.appspot.com/all_flake_occurrences?key=ahVzfmNocm9...

Original issue's description:
> Re-enable DCHECK for pointertypes of coalesced events
> 
> The modified DCHECK was failing on MAC when mouse was
> leaving window due to the missing pointer type from
> the event Chrome was receiveing from the OS. So we
> were setting the pointerType to Unknown.
> After the following fix:
>
https://chromium.googlesource.com/chromium/src/+/e97eb52977dd7ed3936227f0d240...
> we have a heuristic in place to set the type to either
> pen or mouse. So this DCHECK can be enabled again.
> 
> BUG=684292
> 
> Review-Url: https://codereview.chromium.org/2688793003
> Cr-Commit-Position: refs/heads/master@{#450075}
> Committed:
https://chromium.googlesource.com/chromium/src/+/6b4cb83ed1e58193e8f3935ff406...

TBR=mustaq@chromium.org,bokan@chromium.org,rbyers@chromium.org,nzolghadr@chro...
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=684292
==========

to

==========
Revert of Re-enable DCHECK for pointertypes of coalesced events (patchset #1
id:1 of https://codereview.chromium.org/2688793003/ )

Reason for revert:
Caused flakiness of
WebRtcFromWebAccessibleResourceTest.GetUserMediaInWebAccessibleResourceFail

https://chromium-try-flakes.appspot.com/all_flake_occurrences?key=ahVzfmNocm9...

Original issue's description:
> Re-enable DCHECK for pointertypes of coalesced events
> 
> The modified DCHECK was failing on MAC when mouse was
> leaving window due to the missing pointer type from
> the event Chrome was receiveing from the OS. So we
> were setting the pointerType to Unknown.
> After the following fix:
>
https://chromium.googlesource.com/chromium/src/+/e97eb52977dd7ed3936227f0d240...
> we have a heuristic in place to set the type to either
> pen or mouse. So this DCHECK can be enabled again.
> 
> BUG=684292
> 
> Review-Url: https://codereview.chromium.org/2688793003
> Cr-Commit-Position: refs/heads/master@{#450075}
> Committed:
https://chromium.googlesource.com/chromium/src/+/6b4cb83ed1e58193e8f3935ff406...

TBR=mustaq@chromium.org,bokan@chromium.org,rbyers@chromium.org,nzolghadr@chro...
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=684292

Review-Url: https://codereview.chromium.org/2706513002
Cr-Commit-Position: refs/heads/master@{#451427}
Committed:
https://chromium.googlesource.com/chromium/src/+/47542d73322fa629f5d02975b7a2...
==========

[commit-bot: I haz the power, 2017-02-18 06:26:19]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/47542d73322fa629f5d02975b7a2...