[CSS Grid Layout] Add grid.css to hold the common grid testing code
https://bugs.webkit.org/show_bug.cgi?id=107044

Reviewed by Tony Chang.

* fast/css-grid-layout/containing-block-grids.html:
Removed 2 bad display: none rules that where overriden by
the inline style declaration.

* fast/css-grid-layout/minmax-fixed-logical-height-only.html:
* fast/css-grid-layout/breadth-size-resolution-grid.html:
* fast/css-grid-layout/calc-resolution-grid-item.html:
* fast/css-grid-layout/display-grid-set-get.html:
* fast/css-grid-layout/grid-columns-rows-get-set-multiple.html:
* fast/css-grid-layout/grid-columns-rows-get-set.html:
* fast/css-grid-layout/grid-element-padding-margin.html:
* fast/css-grid-layout/minmax-fixed-logical-width-only.html:
* fast/css-grid-layout/minmax-min-content-column-resolution-columns.html:
* fast/css-grid-layout/minmax-min-content-column-resolution-rows.html:
* fast/css-grid-layout/percent-grid-item-in-percent-grid-track-in-percent-grid.html:
* fast/css-grid-layout/percent-grid-item-in-percent-grid-track-update.html:
* fast/css-grid-layout/percent-grid-item-in-percent-grid-track.html:
* fast/css-grid-layout/percent-padding-margin-resolution-grid-item-update.html:
* fast/css-grid-layout/percent-padding-margin-resolution-grid-item.html:
* fast/css-grid-layout/percent-resolution-grid-item.html:
* fast/css-grid-layout/place-cell-by-index.html:
Updated all the files above to:
- use grid.css.
- rename 'a', 'b', 'c' and 'd' to more meaningful.
- change the previous ids to be classes as we ended up having several divs with the same id.

* fast/css-grid-layout/resources/grid.css: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@140480 268f45cc-cd09-0410-ab3c-d52691b4dbfc
        [WK2] WebProcessService is not terminated when page is closed
        https://bugs.webkit.org/show_bug.cgi?id=107595

        Reviewed by Anders Carlsson.

        * platform/mac/RunLoopMac.mm: (WebCore::RunLoop::stop): Allow stopping XPC service
        run loop. Also, harmonized NSApp vs. [NSApplication sharedApplication] usage.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@140481 268f45cc-cd09-0410-ab3c-d52691b4dbfc