Fix lint errors in chromium_android.py and chromium_android_unittest.py

Tools/Scripts/webkitpy/layout_tests/port/chromium_android.py

 # Copyright (C) 2012 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 124 matching lines @@
 
 # List of test resources from webkit platform. These resources will be copied to the external storage.
 WEBKIT_PLATFORM_RESOURCES_TO_PUSH = [
     'third_party/hyphen/hyph_en_US.dic',
 ]
 
 MD5SUM_DEVICE_FILE_NAME = 'md5sum_bin'
 MD5SUM_HOST_FILE_NAME = 'md5sum_bin_host'
 MD5SUM_DEVICE_PATH = '/data/local/tmp/' + MD5SUM_DEVICE_FILE_NAME
 
-# Shared pieces of information for the two supported test runners.
-class SharedDriverDetails(object):
+
+# Information required when running layout tests using content_shell as the test runner.
+class ContentShellDriverDetails():
     def device_cache_directory(self):
         return self.device_directory() + 'cache/'
+
     def device_fonts_directory(self):
         return self.device_directory() + 'fonts/'
+
     def device_forwarder_path(self):
         return self.device_directory() + 'forwarder'
+
     def device_fifo_directory(self):
         return '/data/data/' + self.package_name() + '/files/'
 
-# Information required when running layout tests using content_shell as the test runner.
-class ContentShellDriverDetails(SharedDriverDetails):
     def apk_name(self):
         return 'apks/ContentShell.apk'
+
     def package_name(self):
         return 'org.chromium.content_shell_apk'
+
     def activity_name(self):
         return self.package_name() + '/.ContentShellActivity'
+
     def library_name(self):
         return 'libcontent_shell_content_view.so'
+
     def additional_resources(self):
         return ['content_resources.pak', 'shell_resources.pak']
+
     def command_line_file(self):
         return '/data/local/tmp/content-shell-command-line'
+
     def additional_command_line_flags(self):
         return ['--dump-render-tree', '--encode-binary']
+
     def device_directory(self):
         return DEVICE_SOURCE_ROOT_DIR + 'content_shell/'
 
+
 # The AndroidCommands class encapsulates commands to communicate with an attached device.
 class AndroidCommands(object):
     _adb_command_path = None
     _adb_command_path_options = []
 
     def __init__(self, executive, device_serial):
         self._executive = executive
         self._device_serial = device_serial
 
     # Local public methods.
@@ skipping 856 matching lines @@
         return command
 
     def _read_prompt(self, deadline):
         last_char = ''
         while True:
             current_char = self._server_process.read_stdout(deadline, 1)
             if current_char == ' ':
                 if last_char in ('#', '$'):
                     return
             last_char = current_char