Added net::NetworkInterface::interface_index.
Not implemented for Android.

BUG=319068

Review URL: https://codereview.chromium.org/100703002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238671 0039d316-1c4b-4281-b951-d872f2087c98
Android: fixes NPE on content_browsertests

Do not de-reference target if it's null.

BUG=324826

Review URL: https://codereview.chromium.org/101933002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238672 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 238672