Add section on compressing pexe files for deployment.

BUG=None
R=binji@chromium.org, jfb@chromium.org, jvoung@chromium.org

Review URL: https://codereview.chromium.org/177533025

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254489 0039d316-1c4b-4281-b951-d872f2087c98
Add a test case for crbug.com/347339.

BUG=347339
R=jam@chromium.org

Review URL: https://codereview.chromium.org/184483006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254490 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254490
Cleanup shill_stub_helper, GetSharedProfilePath -> ShillProfileClient

Also replaces IsStubPortalledWifiEnabled() with more robust logic.

BUG=345033
R=pneubeck@chromium.org

Review URL: https://codereview.chromium.org/183033004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254492 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254492