Fix a pref test -- Win/Linux don't have browser.show_page_options_buttons pref

chrome/test/pyautolib/pyauto.py

 #!/usr/bin/python
 
 # Copyright (c) 2010 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """PyAuto: Python Interface to Chromium's Automation Proxy.
 
 PyAuto uses swig to expose Automation Proxy interfaces to Python.
 For complete documentation on the functionality available,
@@ skipping 161 matching lines @@
     if sys.platform == 'win32':
       # Don't quote the ':' in drive letter ( say, C: ) on win.
       # Also, replace '\' with '/' as expected in a file:/// url.
       drive, rest = os.path.splitdrive(abs_path)
       quoted_path = drive.upper() + urllib.quote((rest.replace('\\', '/')))
       return 'file:///' + quoted_path
     else:
       quoted_path = urllib.quote(abs_path)
       return 'file://' + quoted_path
 
+  @staticmethod
+  def IsMac():
+    """Are we on Mac?"""
+    return 'darwin' == sys.platform
+
+  @staticmethod
+  def IsLinux():
+    """Are we on Linux?"""
+    return 'linux2' == sys.platform
+
+  @staticmethod
+  def IsWin():
+    """Are we on Win?"""
+    return 'win32' == sys.platform
+
+  @staticmethod
+  def IsPosix():
+    """Are we on Mac/Linux?"""
+    return PyUITest.IsMac() or PyUITest.IsLinux()
+
   def WaitUntil(self, function, timeout=-1, retry_sleep=0.25, args=[]):
     """Poll on a condition until timeout.
 
     Waits until the |function| evalues to True or until |timeout| secs,
     whichever occurs earlier.
 
     This is better than using a sleep, since it waits (almost) only as much
     as needed.
 
     WARNING: This method call should be avoided as far as possible in favor
@@ skipping 492 matching lines @@
     if self._options.verbose:
       verbosity = 2
     result = unittest.TextTestRunner(verbosity=verbosity).run(pyauto_suite)
     del loaded_tests  # Need to destroy test cases before the suite
     del pyauto_suite
     sys.exit(not result.wasSuccessful())
 
 
 if __name__ == '__main__':
   Main()