Add a few PyAuto tests for bookmarks....

chrome/test/pyautolib/pyauto.py

Index: chrome/test/pyautolib/pyauto.py
===================================================================
--- chrome/test/pyautolib/pyauto.py	(revision 42350)
+++ chrome/test/pyautolib/pyauto.py	(working copy)
@@ -129,6 +129,11 @@
   def tearDown(self):
     self.TearDown()  # Destroy browser
 
+  @staticmethod
+  def DataDir():
+    """Returns the path to the data dir chrome/test/data."""
+    return os.path.join(os.path.dirname(__file__), os.pardir, "data")
+
   def GetBookmarkModel(self):
     """Return the bookmark model as a BookmarkModel object.