Refactor: Make PyAuto InstallExtension() take a string. Delete dead code.

chrome/test/functional/chromeos_security.py

Index: chrome/test/functional/chromeos_security.py
diff --git a/chrome/test/functional/chromeos_security.py b/chrome/test/functional/chromeos_security.py
index 2788cee39892d2d8fb25f6904a84ac3d35a726c9..acbb54f2f32a74d8b7c2f2bb2420067aaa458f28 100644
--- a/chrome/test/functional/chromeos_security.py
+++ b/chrome/test/functional/chromeos_security.py
@@ -170,10 +170,9 @@ class ChromeosSecurity(pyauto.PyUITest):
         self.assertTrue(
             file_name in [x['crx_file'] for x in self._bundled_crx_baseline],
             msg='Unexpected CRX file: ' + file_name)
-        crx_file = pyauto.FilePath(
-            os.path.join(self._bundled_crx_directory, file_name))
+        crx_file = os.path.join(self._bundled_crx_directory, file_name)
         self.assertTrue(self.InstallExtension(crx_file, False),
-                        msg='Extension install failed: %s' % crx_file.value())
+                        msg='Extension install failed: %s' % crx_file)
 
     # Verify that the permissions information in the baseline matches the
     # permissions associated with the installed bundled CRX extensions.
@@ -184,10 +183,9 @@ class ChromeosSecurity(pyauto.PyUITest):
     # Install all bundled extensions on the device.
     for file_name in os.listdir(self._bundled_crx_directory):
       if file_name.endswith('.crx'):
-        crx_file = pyauto.FilePath(
-            os.path.join(self._bundled_crx_directory, file_name))
+        crx_file = os.path.join(self._bundled_crx_directory, file_name)
         self.assertTrue(self.InstallExtension(crx_file, False),
-                        msg='Extension install failed: %s' % crx_file.value())
+                        msg='Extension install failed: %s' % crx_file)
 
     # Ensure that the set of installed extension names precisely matches the
     # baseline.