Use sky_shell instead of mojo_shell for testing.

sky/tools/webkitpy/layout_tests/port/android.py

Index: sky/tools/webkitpy/layout_tests/port/android.py
diff --git a/sky/tools/webkitpy/layout_tests/port/android.py b/sky/tools/webkitpy/layout_tests/port/android.py
index 89000387a351b68a0fc47aca96c63d9d620fca56..64ea1b3416bc8830b3c2b4989369506610d0960f 100644
--- a/sky/tools/webkitpy/layout_tests/port/android.py
+++ b/sky/tools/webkitpy/layout_tests/port/android.py
@@ -426,9 +426,6 @@ class AndroidPort(base.Port):
         if not self.get_option('disable_breakpad'):
             self._dump_reader = DumpReaderAndroid(host, self._build_path())
 
-        if self.driver_name() != self.CONTENT_SHELL_NAME:
-            raise AssertionError('Layout tests on Android only support content_shell as the driver.')
-
         self._driver_details = ContentShellDriverDetails()
 
         # Initialize the AndroidDevices class which tracks available devices.
@@ -460,9 +457,6 @@ class AndroidPort(base.Port):
     def path_to_md5sum_host(self):
         return self._build_path(MD5SUM_HOST_FILE_NAME)
 
-    def additional_drt_flag(self):
-        return self._driver_details.additional_command_line_flags(use_breakpad=not self.get_option('disable_breakpad'))
-
     def default_timeout_ms(self):
         # Android platform has less computing power than desktop platforms.
         # Using 10 seconds allows us to pass most slow tests which are not