Remove SWIGged use of BrowserProxy and TabProxy from PyAuto tests.

chrome/test/functional/omniboxmodel.py

Index: chrome/test/functional/omniboxmodel.py
diff --git a/chrome/test/functional/omniboxmodel.py b/chrome/test/functional/omniboxmodel.py
index 3c4a74114c4a36c9122d3150a093c15e03ec635c..579bb80cd8ecb279f45a12c60c5baf4bdcbd4efc 100755
--- a/chrome/test/functional/omniboxmodel.py
+++ b/chrome/test/functional/omniboxmodel.py
@@ -87,10 +87,10 @@ class OmniboxModelTest(autotour.Godel, PyUITest):
     self.VerifyOmniboxInfo()
 
   @autotour.GodelAction(10, CanCloseTab)
-  def CloseTab(self):
+  def CloseFirstTab(self):
     """Closes the first tab from the first window"""
     self._tab_count = self._tab_count - 1
-    self.GetBrowserWindow(0).GetTab(0).Close(True)
+    self.CloseTab()
 
   def VerifyOmniboxInfo(self):
     for key in self._url_map.keys():