[pyauto] Convenience method to determine if we're on aura

BUG=chromium-os:25708
TEST=None

R=dtu@chromium.org


Review URL: http://codereview.chromium.org/9314006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@119995 0039d316-1c4b-4281-b951-d872f2087c98

chrome/test/pyautolib/pyauto.py

@@ -1602,6 +1602,10 @@ class PyUITest(pyautolib.PyUITestBase, unittest.TestCase):
     }
     return self._GetResultFromJSONRequest(cmd_dict, windex=None)
 
+  def IsAura(self):
+    """Is this Aura?"""
+    return self.GetBrowserInfo()['properties']['aura']
+
   def GetProcessInfo(self):
     """Returns information about browser-related processes that currently exist.