Revert of [RootLayerScrolls] Fix ScrollingCoordinatorTest

Revert of [RootLayerScrolls] Fix ScrollingCoordinatorTest (patchset #2 id:20001 of https://codereview.chromium.org/2658253003/ )

Reason for revert:
Broke https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Android%20%28Nexus4%29/builds/60268

All/ScrollingCoordinatorTest.iframeScrolling/1 fails consistently with:

../../third_party/WebKit/Source/web/tests/ScrollingCoordinatorTest.cpp:687: Failure
Value of: innerCompositor->layerForHorizontalScrollbar()
  Actual: false
Expected: true

Original issue's description:
> [RootLayerScrolls] Fix ScrollingCoordinatorTest
> 
> BUG=490942
> R=skobes@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2658253003
> Cr-Commit-Position: refs/heads/master@{#447376}
> Committed: https://chromium.googlesource.com/chromium/src/+/f32ea8e81f35c9313818e3f57d960516df478670

TBR=skobes@chromium.org,szager@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=490942
Review-Url: https://codereview.chromium.org/2672473002
Cr-Commit-Position: refs/heads/master@{#447496}
Committed: https://chromium.googlesource.com/chromium/src/+/08662506ee77385204da644804c26dc8701e796d

[johnme, 2017-02-01 13:08:10]

The CQ bit was checked by johnme@chromium.org

[johnme, 2017-02-01 13:08:11]

Created Revert of [RootLayerScrolls] Fix ScrollingCoordinatorTest

[commit-bot: I haz the power, 2017-02-01 13:08:21]

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, 2017-02-01 13:10:12]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1485954490857740, "parent_rev":
"837e405817fcb63cd3652381d3fb8aae3c28e16d", "commit_rev":
"08662506ee77385204da644804c26dc8701e796d"}

[commit-bot: I haz the power, 2017-02-01 13:11:12]

Description was changed from

==========
Revert of [RootLayerScrolls] Fix ScrollingCoordinatorTest (patchset #2 id:20001
of https://codereview.chromium.org/2658253003/ )

Reason for revert:
Broke
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Android%20%28N...

All/ScrollingCoordinatorTest.iframeScrolling/1 fails consistently with:

../../third_party/WebKit/Source/web/tests/ScrollingCoordinatorTest.cpp:687:
Failure
Value of: innerCompositor->layerForHorizontalScrollbar()
  Actual: false
Expected: true

Original issue's description:
> [RootLayerScrolls] Fix ScrollingCoordinatorTest
> 
> BUG=490942
> R=skobes@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2658253003
> Cr-Commit-Position: refs/heads/master@{#447376}
> Committed:
https://chromium.googlesource.com/chromium/src/+/f32ea8e81f35c9313818e3f57d96...

TBR=skobes@chromium.org,szager@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=490942
==========

to

==========
Revert of [RootLayerScrolls] Fix ScrollingCoordinatorTest (patchset #2 id:20001
of https://codereview.chromium.org/2658253003/ )

Reason for revert:
Broke
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Android%20%28N...

All/ScrollingCoordinatorTest.iframeScrolling/1 fails consistently with:

../../third_party/WebKit/Source/web/tests/ScrollingCoordinatorTest.cpp:687:
Failure
Value of: innerCompositor->layerForHorizontalScrollbar()
  Actual: false
Expected: true

Original issue's description:
> [RootLayerScrolls] Fix ScrollingCoordinatorTest
> 
> BUG=490942
> R=skobes@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2658253003
> Cr-Commit-Position: refs/heads/master@{#447376}
> Committed:
https://chromium.googlesource.com/chromium/src/+/f32ea8e81f35c9313818e3f57d96...

TBR=skobes@chromium.org,szager@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=490942

Review-Url: https://codereview.chromium.org/2672473002
Cr-Commit-Position: refs/heads/master@{#447496}
Committed:
https://chromium.googlesource.com/chromium/src/+/08662506ee77385204da644804c2...
==========

[commit-bot: I haz the power, 2017-02-01 13:11:13]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/08662506ee77385204da644804c2...