Bug 1373798 part 4. Add pseudo-classes for matching on the "dir" attribute states. r=emilio

MozReview-Commit-ID: pBbCiKKvi8

--HG--
extra : rebase_source : 4b2b63c228af4b22f5bc998ee0f2ac4445f618f8

layout/style/nsCSSPseudoClassList.h

@@ -208,6 +208,19 @@ CSS_STATE_PSEUDO_CLASS(mozMathIncrementScriptLevel,
                        ":-moz-math-increment-script-level", 0, "",
                        NS_EVENT_STATE_INCREMENT_SCRIPT_LEVEL)
 
+CSS_STATE_PSEUDO_CLASS(mozHasDirAttr, ":-moz-has-dir-attr",
+                       CSS_PSEUDO_CLASS_ENABLED_IN_UA_SHEETS, "",
+                       NS_EVENT_STATE_HAS_DIR_ATTR)
+CSS_STATE_PSEUDO_CLASS(mozDirAttrLTR, ":-moz-dir-attr-ltr",
+                       CSS_PSEUDO_CLASS_ENABLED_IN_UA_SHEETS, "",
+                       NS_EVENT_STATE_DIR_ATTR_LTR)
+CSS_STATE_PSEUDO_CLASS(mozDirAttrRTL, ":-moz-dir-attr-rtl",
+                       CSS_PSEUDO_CLASS_ENABLED_IN_UA_SHEETS, "",
+                       NS_EVENT_STATE_DIR_ATTR_RTL)
+CSS_STATE_PSEUDO_CLASS(mozDirAttrLikeAuto, ":-moz-dir-attr-like-auto",
+                       CSS_PSEUDO_CLASS_ENABLED_IN_UA_SHEETS, "",
+                       NS_EVENT_STATE_DIR_ATTR_LIKE_AUTO)
+
 CSS_STATE_PSEUDO_CLASS(mozAutofill, ":-moz-autofill",
                        CSS_PSEUDO_CLASS_ENABLED_IN_UA_SHEETS_AND_CHROME, "",
                        NS_EVENT_STATE_AUTOFILL)