[CSS] -webkit-var must be case sensitive according to specs

Source/core/rendering/RenderObject.cpp

Index: Source/core/rendering/RenderObject.cpp
diff --git a/Source/core/rendering/RenderObject.cpp b/Source/core/rendering/RenderObject.cpp
index da52773b9c681e0a141c09e87d073e96df4c1b23..e9ade48f2e0cde8cd7ec91413c10b854986005b7 100644
--- a/Source/core/rendering/RenderObject.cpp
+++ b/Source/core/rendering/RenderObject.cpp
@@ -1647,13 +1647,15 @@ Color RenderObject::selectionBackgroundColor() const
 {
     Color color;
     if (style()->userSelect() != SELECT_NONE) {
-        RefPtr<RenderStyle> pseudoStyle = getUncachedPseudoStyle(PseudoStyleRequest(SELECTION));
-        if (pseudoStyle && pseudoStyle->visitedDependentColor(CSSPropertyBackgroundColor).isValid())
-            color = pseudoStyle->visitedDependentColor(CSSPropertyBackgroundColor).blendWithWhite();
-        else
-            color = frame()->selection()->isFocusedAndActive() ?
-                    theme()->activeSelectionBackgroundColor() :
-                    theme()->inactiveSelectionBackgroundColor();
+        if (frame()->selection()->shouldShowBlockCursor() && frame()->selection()->isCaret()) {
+            color = style()->visitedDependentColor(CSSPropertyColor).blendWithWhite();
+        } else {
+            RefPtr<RenderStyle> pseudoStyle = getUncachedPseudoStyle(PseudoStyleRequest(SELECTION));
+            if (pseudoStyle && pseudoStyle->visitedDependentColor(CSSPropertyBackgroundColor).isValid())
+                color = pseudoStyle->visitedDependentColor(CSSPropertyBackgroundColor).blendWithWhite();
+            else
+                color = frame()->selection()->isFocusedAndActive() ? theme()->activeSelectionBackgroundColor() : theme()->inactiveSelectionBackgroundColor();
+        }
     }
 
     return color;