Transfer content_shell.pak to the device under test for running webkit_unit_tests on android.

This is required for CL, https://codereview.chromium.org/456413002, to run webkit_unit_tests on android.

R=jochen@chromium.org

Review URL: https://codereview.chromium.org/542003002

git-svn-id: svn://svn.chromium.org/blink/trunk@181459 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/android.py

@@ -171,7 +171,7 @@ class ContentShellDriverDetails():
         return 'libcontent_shell_content_view.so'
 
     def additional_resources(self):
-        return ['content_resources.pak', 'shell_resources.pak']
+        return ['content_resources.pak', 'content_shell.pak', 'shell_resources.pak']
 
     def command_line_file(self):
         return '/data/local/tmp/content-shell-command-line'