Revert of Use CSS pixels for scrolling tests.

Revert of Use CSS pixels for scrolling tests. (patchset #2 id:20001 of https://codereview.chromium.org/2066573004/ )

Reason for revert:
Speculative revert to see if it is the cause for crbug/621489.

Original issue's description:
> Use DIP for scrolling tests.
> 
> DIP stands for Device-Independent Pixel. Chrome on CrOS is configured
> with IsUseZoomForDSFEnabled. On high-end devices with high DPI display
> the return values from __GestureCommon_GetBoundingVisibleRect will be
> the number of real pixels, which causes troubles as the scrolling
> coordiates are expecting DIP.
> 
> The fix here is to convert real pixel values back to DIP by dividing it
> with window.devicePixelRatio.
> 
> BUG=chromium:599656
> TEST=smoothness.top_25_smooth now passes on Pixel
> 
> Committed: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+/91953db7ae2b087fdc2581c39d07e3862e31fa96

TBR=oshima@chromium.org,achuith@chromium.org,bccheng@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:599656
Committed: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+/d4464872051362c384127e2e21fd25557bbd8a83

[bccheng, 2016-06-21 16:38:35]

The CQ bit was checked by bccheng@chromium.org

[bccheng, 2016-06-21 16:38:36]

Created Revert of Use CSS pixels for scrolling tests.

[commit-bot: I haz the power, 2016-06-21 16:38:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2086833003/1

[commit-bot: I haz the power, 2016-06-21 16:38:44]

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

[commit-bot: I haz the power, 2016-06-21 16:38:45]

No L-G-T-M from a valid reviewer yet. 
CQ run can only be started by full committers or once the patch has
received an L-G-T-M from a full committer.
Even if an L-G-T-M may have been provided, it was from a non-committer,
_not_ a full super star committer.
Committers are members of the group "project-catapult-committers".
Note that this has nothing to do with OWNERS files.

[bccheng, 2016-06-21 20:59:03]

The CQ bit was checked by bccheng@chromium.org

[commit-bot: I haz the power, 2016-06-21 20:59:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2086833003/1

[commit-bot: I haz the power, 2016-06-21 20:59:16]

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

[commit-bot: I haz the power, 2016-06-21 20:59:17]

No L-G-T-M from a valid reviewer yet. 
CQ run can only be started by full committers or once the patch has
received an L-G-T-M from a full committer.
Even if an L-G-T-M may have been provided, it was from a non-committer,
_not_ a full super star committer.
Committers are members of the group "project-catapult-committers".
Note that this has nothing to do with OWNERS files.

[bccheng, 2016-06-21 20:59:20]

The CQ bit was unchecked by bccheng@chromium.org

[bccheng, 2016-06-21 21:03:33]

bccheng@chromium.org changed reviewers:
+ oysteine@chromium.org

[oshima, 2016-06-24 07:08:05]

do you need lgtm?

[bccheng, 2016-06-24 16:21:00]

Yes...

[oystein (OOO til 10th of July), 2016-06-27 19:26:15]

lgtm

[bccheng, 2016-06-28 00:41:38]

The CQ bit was checked by bccheng@chromium.org

[commit-bot: I haz the power, 2016-06-28 00:41:42]

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, 2016-06-28 01:12:58]

Description was changed from

==========
Revert of Use CSS pixels for scrolling tests. (patchset #2 id:20001 of
https://codereview.chromium.org/2066573004/ )

Reason for revert:
Speculative revert to see if it is the cause for crbug/621489.

Original issue's description:
> Use DIP for scrolling tests.
> 
> DIP stands for Device-Independent Pixel. Chrome on CrOS is configured
> with IsUseZoomForDSFEnabled. On high-end devices with high DPI display
> the return values from __GestureCommon_GetBoundingVisibleRect will be
> the number of real pixels, which causes troubles as the scrolling
> coordiates are expecting DIP.
> 
> The fix here is to convert real pixel values back to DIP by dividing it
> with window.devicePixelRatio.
> 
> BUG=chromium:599656
> TEST=smoothness.top_25_smooth now passes on Pixel
> 
> Committed:
https://chromium.googlesource.com/external/github.com/catapult-project/catapu...

TBR=oshima@chromium.org,achuith@chromium.org,bccheng@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:599656
==========

to

==========
Revert of Use CSS pixels for scrolling tests. (patchset #2 id:20001 of
https://codereview.chromium.org/2066573004/ )

Reason for revert:
Speculative revert to see if it is the cause for crbug/621489.

Original issue's description:
> Use DIP for scrolling tests.
> 
> DIP stands for Device-Independent Pixel. Chrome on CrOS is configured
> with IsUseZoomForDSFEnabled. On high-end devices with high DPI display
> the return values from __GestureCommon_GetBoundingVisibleRect will be
> the number of real pixels, which causes troubles as the scrolling
> coordiates are expecting DIP.
> 
> The fix here is to convert real pixel values back to DIP by dividing it
> with window.devicePixelRatio.
> 
> BUG=chromium:599656
> TEST=smoothness.top_25_smooth now passes on Pixel
> 
> Committed:
https://chromium.googlesource.com/external/github.com/catapult-project/catapu...

TBR=oshima@chromium.org,achuith@chromium.org,bccheng@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:599656

Committed:
https://chromium.googlesource.com/external/github.com/catapult-project/catapu...
==========

[commit-bot: I haz the power, 2016-06-28 01:12:59]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/external/github.com/catapult-project/catapu...