Check subtree paint invalidation when overflow clip status changes

Check subtree paint invalidation when overflow clip status changes

Before https://crrev.com/392652 because we included descendant overflow
into container overflow and the paint invalidation rect covered the
changed part of descendants.

Call setNeedsPaintInvalidationSubtree() to force checking of paint
invalidation of descendants when overflow clip status changes.

The other changes are needed because we need to move
clearPaintInvalidationFlags() after
newPaintInvalidationState.updateForChildren().

Several overriding invalidateTreeIfNeeded() methods in subclasses are
removed because they have been the same as inherited ones after we
changed the paint invalidation tree walk order.

BUG=613475
TEST=paint/invalidation/overflow-hidden-to-visible.html
TEST=paint/invalidation/overflow-visible-to-hidden.html

Review-Url: https://codereview.chromium.org/2000763003
Cr-Commit-Position: refs/heads/master@{#395491}

Committed: https://chromium.googlesource.com/chromium/src/+/3104da0648b2a0fac4ca5463180949a98f7c3414

[Xianzhu, 2016-05-25 00:04:25]

Description was changed from

==========
Check subtree paint invalidation when overflow clip status changes

Before https://crrev.com/392652 because we included descendant overflow
into container overflow and the paint invalidation rect covered the
changed part of descendants.

Call setNeedsPaintInvalidationSubtree() to force checking of paint
invalidation of descendants when overflow clip status changes.

The other changes are needed because we need to move
clearPaintInvalidationFlags() after
newPaintInvalidationState.updateForChildren().

Several overriding invalidateTreeIfNeeded() methods in subclasses are
removed because they have been the same as inherited ones after we
changed the paint invalidation tree walk order.

BUG=613475
TEST=paint/invalidation/overflow-hidden-to-visible.html
TEST=paint/invalidation/overflow-visible-to-hidden.html

Review-Url: https://codereview.chromium.org/2000763003
Cr-Commit-Position: refs/heads/master@{#395491}
==========

to

==========
Check subtree paint invalidation when overflow clip status changes

Before https://crrev.com/392652 because we included descendant overflow
into container overflow and the paint invalidation rect covered the
changed part of descendants.

Call setNeedsPaintInvalidationSubtree() to force checking of paint
invalidation of descendants when overflow clip status changes.

The other changes are needed because we need to move
clearPaintInvalidationFlags() after
newPaintInvalidationState.updateForChildren().

Several overriding invalidateTreeIfNeeded() methods in subclasses are
removed because they have been the same as inherited ones after we
changed the paint invalidation tree walk order.

BUG=613475
TEST=paint/invalidation/overflow-hidden-to-visible.html
TEST=paint/invalidation/overflow-visible-to-hidden.html

Review-Url: https://codereview.chromium.org/2000763003
Cr-Commit-Position: refs/heads/master@{#395491}

Committed:
https://chromium.googlesource.com/chromium/src/+/3104da0648b2a0fac4ca54631809...
==========

[Xianzhu, 2016-05-25 00:04:27]

Committed patchset #1 (id:1) manually as
3104da0648b2a0fac4ca5463180949a98f7c3414.