https://bugs.webkit.org/show_bug.cgi?id=122053

Patch by Gurpreet Kaur <k.gurpreet@samsung.com> on 2013-09-28
Reviewed by Darin Adler.

Source/WebCore:

drop-shadow properties were not applied incase its values
were given in vh, vw, vmax, vmin units.

Tests: fast/css/drop-shadow-viewport-height.html
       fast/css/drop-shadow-viewport-vmax.html
       fast/css/drop-shadow-viewport-vmin.html
       fast/css/drop-shadow-viewport-width.html

* css/StyleResolver.cpp:
(WebCore::StyleResolver::createFilterOperations):
Calculating the drop-shadow values which has been specified in viewport
units.The vh/vw units are calcultated as percent of viewport height and
viewport width respectively. 1vmax: 1vw or 1vh, whatever is largest.
1vmin: 1vw or 1vh, whatever is smallest.

LayoutTests:

* fast/css/drop-shadow-viewport-height-expected-mismatch.html: Added.
* fast/css/drop-shadow-viewport-height.html: Added.
* fast/css/drop-shadow-viewport-vmax-expected-mismatch.html: Added.
* fast/css/drop-shadow-viewport-vmax.html: Added.
* fast/css/drop-shadow-viewport-vmin-expected-mismatch.html: Added.
* fast/css/drop-shadow-viewport-vmin.html: Added.
* fast/css/drop-shadow-viewport-width-expected-mismatch.html: Added.
* fast/css/drop-shadow-viewport-width.html: Added.
Added new tests for verifying that drop-shadow properties are applied
when its values are viewport units.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@156606 268f45cc-cd09-0410-ab3c-d52691b4dbfc