Fix W3C check in WebElement.

The driver was changed in cefa1bf to
look at the 'status' field, rather than 'specificationLevel', but
941ddb9 (which predates it, but was
merged later) was doing it the old way.

This also avoids changing the constructor signature.

py/selenium/webdriver/remote/webdriver.py

@@ -198,7 +198,7 @@ def create_web_element(self, element_id):
         """
         Creates a web element with the specified element_id.
         """
-        return WebElement(self, element_id, capabilities=self.capabilities)
+        return WebElement(self, element_id, w3c=self.w3c)
 
     def _unwrap_value(self, value):
         if isinstance(value, dict) and ('ELEMENT' in value or 'element-6066-11e4-a52e-4f735466cecf' in value):

py/selenium/webdriver/remote/webelement.py

@@ -53,11 +53,10 @@ class WebElement(object):
                           'readonly', 'allowfullscreen', 'selected', 'formnovalidate',
                           'multiple', 'autofocus', 'open', 'loop', 'autoplay']
 
-    def __init__(self, parent, id_, capabilities):
+    def __init__(self, parent, id_, w3c=False):
         self._parent = parent
         self._id = id_
-        self.capabilities = capabilities
-        self._w3c = "specificationLevel" in self.capabilities
+        self._w3c = w3c
 
     def __repr__(self):
         return '<{0.__module__}.{0.__name__} (session="{1}", element="{2}")>'.format(