Made list-style-position property independent.

Made list-style-position property independent. Also updated
independent-inheritance-fast-path.html to include listStylePosition.

Tested using independent-inheritance-fast-path.html.

BUG=628043

Review-Url: https://codereview.chromium.org/2566923002
Cr-Commit-Position: refs/heads/master@{#438008}

third_party/WebKit/LayoutTests/fast/css/invalidation/independent-inheritance-fast-path.html

@@ -18,6 +18,7 @@ var independent_properties = [
     ["borderCollapse", "separate", "collapse"],
     ["emptyCells", "show", "hide"],
     ["captionSide", "left", "right"],
+    ["listStylePosition", "outside", "inside"],
 ];
 
 independent_properties.forEach(function(test_data)

third_party/WebKit/Source/core/css/CSSProperties.in

@@ -266,7 +266,7 @@ letter-spacing interpolable, inherited, initial=initialLetterWordSpacing, conver
 lighting-color interpolable, svg, converter=convertColor
 line-height interpolable, inherited, getter=specifiedLineHeight, converter=convertLineHeight
 list-style-image interpolable, inherited, custom_value, typedom_types=[Image]
-list-style-position inherited, keyword_only, keywords=[outside|inside], initial_keyword=outside
+list-style-position inherited, independent, keyword_only, keywords=[outside|inside], initial_keyword=outside
 list-style-type inherited
 margin-bottom interpolable, initial=initialMargin, converter=convertQuirkyLength
 margin-left interpolable, initial=initialMargin, converter=convertQuirkyLength