Coverity: Fixing pass by value.
CID=101462, 101458, 101437, 101471, 101467

BUG=NONE
TEST=NONE

Review URL: http://codereview.chromium.org/9006023

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@115257 0039d316-1c4b-4281-b951-d872f2087c98
NetworkInterface::NetworkInterface(const std::string& name,
                                   const IPAddressNumber& address)
    : name(name), address(address) {
}

NetworkInterface::NetworkInterface(const std::string& name,
                                   const IPAddressNumber& address)
    : name(name), address(address) {
}
