https://bugs.webkit.org/show_bug.cgi?id=122070

Reviewed by Andreas Kling.

Source/WebCore:

This patch fixes a regression from wkrev.com/150259 where pseudo content with
borders or outlines would fail to repaint if the color property changed.
The root bug is that border-color and outline-color properties use 'color' if
no explicit border-color or outline-color are given, and changing color should
repaint borders and outlines even if the text content is empty.

Relevant spec sections:
border: http://www.w3.org/TR/CSS1/#border-color
outline: http://www.w3.org/TR/CSS2/ui.html#propdef-outline-color

This patch also renames StyleDifferenceRepaintIfText to
StyleDifferenceRepaintIfTextOrBorderOrOutline and updates the relevant functions.

Test: fast/repaint/hover-pseudo-borders.html

* rendering/RenderElement.cpp:
(WebCore::RenderElement::hasImmediateNonWhitespaceTextChildOrBorderOrOutline):

    This function has been renamed to reflect that it returns true for borders
    or outlines as well.

(WebCore::RenderElement::shouldRepaintForStyleDifference):
* rendering/RenderElement.h:
* rendering/style/RenderStyle.cpp:
(WebCore::RenderStyle::changeRequiresRepaintIfTextOrBorderOrOutline):
(WebCore::RenderStyle::diff):
* rendering/style/RenderStyle.h:
* rendering/style/RenderStyleConstants.h:
* rendering/svg/SVGResourcesCache.cpp:
(WebCore::SVGResourcesCache::clientStyleChanged):
    These have also been renamed to reflect the new borders and outlines check.

LayoutTests:

* fast/repaint/hover-pseudo-borders.html: Added.
* platform/mac/fast/repaint/hover-pseudo-borders-expected.png: Added.
* platform/mac/fast/repaint/hover-pseudo-borders-expected.txt: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@156619 268f45cc-cd09-0410-ab3c-d52691b4dbfc