firefox_profile.py: use with statement in zipfile as Python 2.x support is dropped (#14489)

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Co-authored-by: Sri Harsha <[email protected]>

Author: Delta456

py/selenium/webdriver/firefox/firefox_profile.py

@@ -276,17 +276,11 @@ def parse_manifest_json(content):
 
         try:
             if zipfile.is_zipfile(addon_path):
-                # Bug 944361 - We cannot use 'with' together with zipFile because
-                # it will cause an exception thrown in Python 2.6.
-                # TODO: use with statement when Python 2.x is no longer supported
-                try:
-                    compressed_file = zipfile.ZipFile(addon_path, "r")
+                with zipfile.ZipFile(addon_path, "r") as compressed_file:
                     if "manifest.json" in compressed_file.namelist():
                         return parse_manifest_json(compressed_file.read("manifest.json"))
 
                     manifest = compressed_file.read("install.rdf")
-                finally:
-                    compressed_file.close()
             elif os.path.isdir(addon_path):
                 manifest_json_filename = os.path.join(addon_path, "manifest.json")
                 if os.path.exists(manifest_json_filename):