Remove redundant invalidation in RenderLayerModelObject::styleDidChange()

Remove redundant invalidation in RenderLayerModelObject::styleDidChange()

RenderStyle::visualInvalidationDiff() is already returning
'more than enough' paint invalidation flag.
The setShouldDoFullPaintInvalidation() call in
RenderLayerModelObject::styleDidChange() is just redundant.

BUG=349061
TEST=all existing tests pass

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=181480

[Xianzhu, 2014-09-05 16:47:51]

wangxianzhu@chromium.org changed reviewers:
+ dsinclair@chromium.org, jchaffraix@chromium.org, leviw@chromium.org

[dsinclair, 2014-09-05 16:50:58]

lgtm

[Julien - ping for review, 2014-09-05 17:12:50]

The CQ bit was checked by jchaffraix@chromium.org

[Julien - ping for review, 2014-09-05 17:12:51]

lgtm

[commit-bot: I haz the power, 2014-09-05 17:13:51]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/wangxianzhu@chromium.org/546513002/1

[commit-bot: I haz the power, 2014-09-05 19:14:33]

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

[commit-bot: I haz the power, 2014-09-05 19:14:38]

Exceeded time limit waiting for builds to trigger.

[Xianzhu, 2014-09-05 19:23:44]

The CQ bit was checked by wangxianzhu@chromium.org

[commit-bot: I haz the power, 2014-09-05 19:24:10]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/wangxianzhu@chromium.org/546513002/1

[commit-bot: I haz the power, 2014-09-05 20:17:25]

Committed patchset #1 (id:1) as 181480