commit 2848739b13b1f454930307439ba00ddd55bb9b40
author wangxianzhu <wangxianzhu@chromium.org> Wed May 11 05:33:37 2016
committer Commit bot <commit-bot@chromium.org> Wed May 11 05:34:55 2016
tree fd11d8dcfe41f9b8cabdb5e52824b22216adff36
parent c4a6ee08262b907d6d7481082319676384d14d1a

Improve handling of PaintInvalidationLayer

Rename PaintInvalidationLayer to PaintInvalidationSubtree.

In LayoutObject::setShouldDoFullPaintInvalidationIncludingNonCompositingDescendants(),
instead of traverse the tree to setShouldDoFullPaintInvalidation(), set
PaintInvalidationSubtree on the root of the subtree.

During paint invalidation, if a LayoutObject is marked
PaintInvalidationSubtree, force full paint invalidation of the subtree
(within the paintInvalidationContainer).

BUG=410097

Review-Url: https://codereview.chromium.org/1950573003
Cr-Commit-Position: refs/heads/master@{#392861}