Only paint the background onto the scrolling contents layer if we have a scrolling contents layer.

Only paint the background onto the scrolling contents layer if we have a scrolling contents layer.

TBR=chrishtr@chromium.org
BUG=647169, 645949
TEST=CompositedLayerMappingTest.BackgroundPaintedIntoGraphicsLayerIfNotCompositedScrolling
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Review-Url: https://codereview.chromium.org/2346883003
Cr-Commit-Position: refs/heads/master@{#419064}
(cherry picked from commit dd59f478410b76764e227fe24642bae6f7b06b26)

Committed: https://chromium.googlesource.com/chromium/src/+/a88c6ad9ff6b006f496679107d484df9ca4782c6

[flackr, 2016-09-20 20:59:32]

Description was changed from

==========
Only paint the background onto the scrolling contents layer if we have a
scrolling contents layer.

BUG=647169,645949
TEST=CompositedLayerMappingTest.BackgroundPaintedIntoGraphicsLayerIfNotCompositedScrolling
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Review-Url: https://codereview.chromium.org/2346883003
Cr-Commit-Position: refs/heads/master@{#419064}
(cherry picked from commit dd59f478410b76764e227fe24642bae6f7b06b26)
==========

to

==========
Only paint the background onto the scrolling contents layer if we have a
scrolling contents layer.

TBR=chrishtr@chromium.org
BUG=647169,645949
TEST=CompositedLayerMappingTest.BackgroundPaintedIntoGraphicsLayerIfNotCompositedScrolling
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Review-Url: https://codereview.chromium.org/2346883003
Cr-Commit-Position: refs/heads/master@{#419064}
(cherry picked from commit dd59f478410b76764e227fe24642bae6f7b06b26)
==========

[flackr, 2016-09-20 20:59:32]

flackr@chromium.org changed reviewers:
+ chrishtr@chromium.org

[flackr, 2016-09-20 21:03:22]

Description was changed from

==========
Only paint the background onto the scrolling contents layer if we have a
scrolling contents layer.

TBR=chrishtr@chromium.org
BUG=647169,645949
TEST=CompositedLayerMappingTest.BackgroundPaintedIntoGraphicsLayerIfNotCompositedScrolling
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Review-Url: https://codereview.chromium.org/2346883003
Cr-Commit-Position: refs/heads/master@{#419064}
(cherry picked from commit dd59f478410b76764e227fe24642bae6f7b06b26)
==========

to

==========
Only paint the background onto the scrolling contents layer if we have a
scrolling contents layer.

TBR=chrishtr@chromium.org
BUG=647169,645949
TEST=CompositedLayerMappingTest.BackgroundPaintedIntoGraphicsLayerIfNotCompositedScrolling
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Review-Url: https://codereview.chromium.org/2346883003
Cr-Commit-Position: refs/heads/master@{#419064}
(cherry picked from commit dd59f478410b76764e227fe24642bae6f7b06b26)

Committed:
https://chromium.googlesource.com/chromium/src/+/a88c6ad9ff6b006f496679107d48...
==========

[flackr, 2016-09-20 21:03:23]

Committed patchset #2 (id:20001) manually as
a88c6ad9ff6b006f496679107d484df9ca4782c6 (presubmit successful).