FrameView shouldn't apply scroll anchoring when root layer scrolling is enabled

FrameView shouldn't apply scroll anchoring when root layer scrolling is enabled

Before this patch, when root layer scrolling was enabled, both FV and PLSA would
perform scroll anchoring. FV doesn't need perform scroll anchoring for the main
frame because PLSA will do the right thing.

This issue was found because the following tests failed when ScrollAnchoring was
turned on by default:
virtual/rootlayerscrolls/fast/scrolling/scroll-into-view-collapsed-div.html
virtual/rootlayerscrolls/fast/scrolling/fractional-scroll-offset-document.html

BUG=597479, 558575
Committed: https://crrev.com/4b34e4b56319572e06425dd77e4d3b30d86ce049
Cr-Commit-Position: refs/heads/master@{#407211}

[ymalik, 2016-07-22 14:45:11]

Description was changed from

==========
FrameView shouldn't apply scroll anchoring when root layer scrolling is enabled

Before this patch, when root layer scrolling was enabled, both FV and PLSA would
perform scroll anchoring. FV doesn't need perform scroll anchoring for the main
frame because PLSA will do the right thing.

This issue was found because the following tests failed when ScrollAnchoring was
turned on by default:
virtual/rootlayerscrolls/fast/scrolling/scroll-into-view-collapsed-div.html
virtual/rootlayerscrolls/fast/scrolling/fractional-scroll-offset-document.html

BUG=597479,558575
==========

to

==========
FrameView shouldn't apply scroll anchoring when root layer scrolling is enabled

Before this patch, when root layer scrolling was enabled, both FV and PLSA would
perform scroll anchoring. FV doesn't need perform scroll anchoring for the main
frame because PLSA will do the right thing.

This issue was found because the following tests failed when ScrollAnchoring was
turned on by default:
virtual/rootlayerscrolls/fast/scrolling/scroll-into-view-collapsed-div.html
virtual/rootlayerscrolls/fast/scrolling/fractional-scroll-offset-document.html

BUG=597479,558575
==========

[ymalik, 2016-07-22 14:45:11]

ymalik@chromium.org changed reviewers:
+ skobes@chromium.org

[ymalik, 2016-07-22 14:45:37]

The CQ bit was checked by ymalik@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-07-22 14:45:53]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[skobes, 2016-07-22 14:53:50]

lgtm

[commit-bot: I haz the power, 2016-07-22 16:09:27]

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

[commit-bot: I haz the power, 2016-07-22 16:09:27]

Dry run: Try jobs failed on following builders:
  win_chromium_rel_ng on master.tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)

[ymalik, 2016-07-22 16:57:14]

The CQ bit was checked by ymalik@chromium.org

[commit-bot: I haz the power, 2016-07-22 16:57:38]

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, 2016-07-22 18:35:21]

Description was changed from

==========
FrameView shouldn't apply scroll anchoring when root layer scrolling is enabled

Before this patch, when root layer scrolling was enabled, both FV and PLSA would
perform scroll anchoring. FV doesn't need perform scroll anchoring for the main
frame because PLSA will do the right thing.

This issue was found because the following tests failed when ScrollAnchoring was
turned on by default:
virtual/rootlayerscrolls/fast/scrolling/scroll-into-view-collapsed-div.html
virtual/rootlayerscrolls/fast/scrolling/fractional-scroll-offset-document.html

BUG=597479,558575
==========

to

==========
FrameView shouldn't apply scroll anchoring when root layer scrolling is enabled

Before this patch, when root layer scrolling was enabled, both FV and PLSA would
perform scroll anchoring. FV doesn't need perform scroll anchoring for the main
frame because PLSA will do the right thing.

This issue was found because the following tests failed when ScrollAnchoring was
turned on by default:
virtual/rootlayerscrolls/fast/scrolling/scroll-into-view-collapsed-div.html
virtual/rootlayerscrolls/fast/scrolling/fractional-scroll-offset-document.html

BUG=597479,558575
==========

[commit-bot: I haz the power, 2016-07-22 18:35:22]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-22 18:37:24]

Description was changed from

==========
FrameView shouldn't apply scroll anchoring when root layer scrolling is enabled

Before this patch, when root layer scrolling was enabled, both FV and PLSA would
perform scroll anchoring. FV doesn't need perform scroll anchoring for the main
frame because PLSA will do the right thing.

This issue was found because the following tests failed when ScrollAnchoring was
turned on by default:
virtual/rootlayerscrolls/fast/scrolling/scroll-into-view-collapsed-div.html
virtual/rootlayerscrolls/fast/scrolling/fractional-scroll-offset-document.html

BUG=597479,558575
==========

to

==========
FrameView shouldn't apply scroll anchoring when root layer scrolling is enabled

Before this patch, when root layer scrolling was enabled, both FV and PLSA would
perform scroll anchoring. FV doesn't need perform scroll anchoring for the main
frame because PLSA will do the right thing.

This issue was found because the following tests failed when ScrollAnchoring was
turned on by default:
virtual/rootlayerscrolls/fast/scrolling/scroll-into-view-collapsed-div.html
virtual/rootlayerscrolls/fast/scrolling/fractional-scroll-offset-document.html

BUG=597479,558575

Committed: https://crrev.com/4b34e4b56319572e06425dd77e4d3b30d86ce049
Cr-Commit-Position: refs/heads/master@{#407211}
==========

[commit-bot: I haz the power, 2016-07-22 18:37:25]

Patchset 1 (id:??) landed as
https://crrev.com/4b34e4b56319572e06425dd77e4d3b30d86ce049
Cr-Commit-Position: refs/heads/master@{#407211}