old_contents: #!/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.
  
  import os
  import glob
  
  import pyauto_functional  # Must be imported before pyauto
  import pyauto
  
  
  class PDFTest(pyauto.PyUITest):
    """PDF related tests
  
    This test runs only on Google Chrome build, not on Chromium.
    """
  
    def _PerformPDFAction(self, action, tab_index=0, windex=0):
      """Perform an action on a PDF tab.
  
      Args:
        action: one of "fitToHeight", "fitToWidth", "ZoomIn", "ZoomOut"
        tab_index: tab index  Defaults to 0
        windex: window index.  Defaults to 0
      """
      assert action in ('fitToHeight', 'fitToWidth', 'ZoomIn', 'ZoomOut')
      js = 'document.getElementsByName("plugin")[0].%s()' % action
      # Add an empty string so that there's something to return back
      # (or else it hangs)
      return self.GetDOMValue('%s + ""' % js, 0, tab_index)
  
  
    def testPDFRunner(self):
      """Navigate to pdf files and verify that browser doesn't crash"""
      # bail out if not a branded build
      properties = self.GetBrowserInfo()['properties']
      if properties['branding'] != 'Google Chrome':
        return
      pdf_files_path = os.path.join(self.DataDir(), 'pyauto_private', 'pdf')
      pdf_files = glob.glob(os.path.join(pdf_files_path, '*.pdf'))
      for pdf_file in pdf_files:
        # Some pdfs cause known crashes. Exclude them. crbug.com/63549
        if os.path.basename(pdf_file) in ('nullip.pdf', 'sample.pdf'):
          continue
        url = self.GetFileURLForPath(os.path.join(pdf_files_path, pdf_file))
        self.AppendTab(pyauto.GURL(url))
      for tab_index in range(1, len(pdf_files) + 1):
        self.ActivateTab(tab_index)
        self._PerformPDFAction('fitToHeight', tab_index=tab_index)
        self._PerformPDFAction('fitToWidth', tab_index=tab_index)
      # Assert that there is at least 1 browser window.
      self.assertTrue(self.GetBrowserWindowCount(),
                      'Browser crashed, no window is open')
  
  
  if __name__ == '__main__':
    pyauto_functional.Main()
  
new_contents: #!/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.
  
  import os
  import glob
  
  import pyauto_functional  # Must be imported before pyauto
  import pyauto
  
  
  class PDFTest(pyauto.PyUITest):
    """PDF related tests
  
    This test runs only on Google Chrome build, not on Chromium.
    """
  
    def _PerformPDFAction(self, action, tab_index=0, windex=0):
      """Perform an action on a PDF tab.
  
      Args:
        action: one of "fitToHeight", "fitToWidth", "ZoomIn", "ZoomOut"
        tab_index: tab index  Defaults to 0
        windex: window index.  Defaults to 0
      """
      assert action in ('fitToHeight', 'fitToWidth', 'ZoomIn', 'ZoomOut')
      js = 'document.getElementsByName("plugin")[0].%s()' % action
      # Add an empty string so that there's something to return back
      # (or else it hangs)
      return self.GetDOMValue('%s + ""' % js, 0, tab_index)
  
  
    def testPDFRunner(self):
      """Navigate to pdf files and verify that browser doesn't crash"""
      # bail out if not a branded build
      properties = self.GetBrowserInfo()['properties']
      if properties['branding'] != 'Google Chrome':
        return
      pdf_files_path = os.path.join(self.DataDir(), 'pyauto_private', 'pdf')
      pdf_files = glob.glob(os.path.join(pdf_files_path, '*.pdf'))
      for pdf_file in pdf_files:
        # Some pdfs cause known crashes. Exclude them. crbug.com/63549
        if os.path.basename(pdf_file) in ('nullip.pdf', 'sample.pdf'):
          continue
        url = self.GetFileURLForPath(pdf_file)
        self.AppendTab(pyauto.GURL(url))
      for tab_index in range(1, len(pdf_files) + 1):
        self.ActivateTab(tab_index)
        self._PerformPDFAction('fitToHeight', tab_index=tab_index)
        self._PerformPDFAction('fitToWidth', tab_index=tab_index)
      # Assert that there is at least 1 browser window.
      self.assertTrue(self.GetBrowserWindowCount(),
                      'Browser crashed, no window is open')
  
  
  if __name__ == '__main__':
    pyauto_functional.Main()
  
subject: Remove duplicate path join call.