PPB_TCPSocket: Remove support for PP_TCPSOCKET_OPTION_ADDRESS_REUSE.

It seems SO_REUSEADDR has security issues on Windows, so we don't want to expose
it via PP_TCPSOCKET_OPTION_ADDRESS_REUSE.

After this change, PPB_TCPSocket will use the same default settings as
net::TCPServerSocket when Bind() is called:
- On POSIX: set SO_REUSEADDR to true.
- On Windows: set SO_EXCLUSIVEADDRUSE to true.

BUG=262601
TEST=None
R=dmichael@chromium.org, tsepez@chromium.org

Review URL: https://codereview.chromium.org/24324003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@224765 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 224765