Check in the thirdparty libs needed for webkitpy.

Tools/Scripts/webkitpy/thirdparty/pylint/examples/custom.py

Index: Tools/Scripts/webkitpy/thirdparty/pylint/examples/custom.py
diff --git a/Tools/Scripts/webkitpy/thirdparty/pylint/examples/custom.py b/Tools/Scripts/webkitpy/thirdparty/pylint/examples/custom.py
new file mode 100644
index 0000000000000000000000000000000000000000..7e4d5e76b1ba1afea4219a86aa67916075fa8705
--- /dev/null
+++ b/Tools/Scripts/webkitpy/thirdparty/pylint/examples/custom.py
@@ -0,0 +1,36 @@
+from logilab import astng
+
+from pylint.interfaces import IASTNGChecker
+from pylint.checkers import BaseChecker
+
+class MyASTNGChecker(BaseChecker):
+    """add member attributes defined using my own "properties" function
+    to the class locals dictionary
+    """
+    
+    __implements__ = IASTNGChecker
+
+    name = 'custom'
+    msgs = {}
+    options = ()
+    # this is important so that your checker is executed before others
+    priority = -1 
+
+    def visit_callfunc(self, node):
+        """called when a CallFunc node is encountered.
+
+        See logilab.astng for the description of available nodes."""
+        if not (isinstance(node.func, astng.Getattr)
+                and isinstance(node.func.expr, astng.Name)
+                and node.func.expr.name == 'properties'
+                and node.func.attrname == 'create'):
+            return
+        in_class = node.frame()
+        for param in node.args:
+            in_class.locals[param.name] = node
+
+    
+def register(linter):
+    """required method to auto register this checker"""
+    linter.register_checker(MyASTNGChecker(linter))
+