test_converter: Avoid conversion for gzipped SVGs

third_party/WebKit/Tools/Scripts/webkitpy/w3c/test_converter.py

 # Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
 # are met:
 #
 # 1. Redistributions of source code must retain the above
 #    copyright notice, this list of conditions and the following
 #    disclaimer.
 # 2. Redistributions in binary form must reproduce the above
@@ skipping 33 matching lines @@
         filename: Absolute path to where the file is.
         reference_support_info: Dict of information about a related reference HTML, if any.
 
     Returns:
         A pair of (list of modified CSS properties, modified text) if the file
         should be modified; None, if the file is not modified.
     """
     # Conversion is not necessary for any tests in wpt now; see http://crbug.com/654081.
     if re.search(r'[/\\]imported[/\\]wpt[/\\]', new_path):
         return None
+    # Skip gzipped SVGs.
+    if filename.endswith('.svgz'):
+        return None
 
     contents = host.filesystem.read_binary_file(filename)
     converter = _W3CTestConverter(new_path, filename, reference_support_info, host)
     if filename.endswith('.css'):
         return converter.add_webkit_prefix_to_unprefixed_properties(contents.decode('utf-8'))
     else:
         try:
             converter.feed(contents.decode('utf-8'))
         except UnicodeDecodeError:
             converter.feed(contents.decode('utf-16'))
@@ skipping 159 matching lines @@
         self.converted_data.extend(['&#', name, ';'])
 
     def handle_comment(self, data):
         self.converted_data.extend(['<!--', data, '-->'])
 
     def handle_decl(self, decl):
         self.converted_data.extend(['<!', decl, '>'])
 
     def handle_pi(self, data):
         self.converted_data.extend(['<?', data, '>'])