Implementation of CSS3 nav-up/down/left/right properties from CSS3 UI.

Source/core/css/CSSPrimitiveValue.h

Index: Source/core/css/CSSPrimitiveValue.h
diff --git a/Source/core/css/CSSPrimitiveValue.h b/Source/core/css/CSSPrimitiveValue.h
index aecea7cbee317b78f060db2139f80b46a89ce60c..d47251c88c6049d1ca29c2196667960b13e36a69 100644
--- a/Source/core/css/CSSPrimitiveValue.h
+++ b/Source/core/css/CSSPrimitiveValue.h
@@ -114,27 +114,28 @@ public:
         CSS_PARSER_OPERATOR = 103,
         CSS_PARSER_INTEGER = 104,
         CSS_PARSER_HEXCOLOR = 105,
+        CSS_PARSER_IDSEL = 106,
 
         // This is used internally for unknown identifiers
-        CSS_PARSER_IDENTIFIER = 106,
+        CSS_PARSER_IDENTIFIER = 107,
 
         // These are from CSS3 Values and Units, but that isn't a finished standard yet
-        CSS_TURN = 107,
-        CSS_REMS = 108,
-        CSS_CHS = 109,
+        CSS_TURN = 108,
+        CSS_REMS = 109,
+        CSS_CHS = 110,
 
         // This is used internally for counter names (as opposed to counter values)
-        CSS_COUNTER_NAME = 110,
+        CSS_COUNTER_NAME = 111,
 
         // This is used by the CSS Shapes draft
-        CSS_SHAPE = 111,
+        CSS_SHAPE = 112,
 
         // Used by border images.
-        CSS_QUAD = 112,
+        CSS_QUAD = 113,
 
-        CSS_CALC = 113,
-        CSS_CALC_PERCENTAGE_WITH_NUMBER = 114,
-        CSS_CALC_PERCENTAGE_WITH_LENGTH = 115,
+        CSS_CALC = 114,
+        CSS_CALC_PERCENTAGE_WITH_NUMBER = 115,
+        CSS_CALC_PERCENTAGE_WITH_LENGTH = 116,
 
         CSS_PROPERTY_ID = 117,
         CSS_VALUE_ID = 118