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
Gardening: Mark svg-fonts-without-missing-glyph.xhtml as flaky on XP

NOTRY=true
TBR=tkent@chromium.org
BUG=411175

Review URL: https://codereview.chromium.org/538343003

git-svn-id: svn://svn.chromium.org/blink/trunk@181460 bbb929c8-8fbe-4397-9dbb-9b2b20218538