Update from https://crrev.com/311076

net/socket/unix_domain_client_socket_posix.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/socket/unix_domain_client_socket_posix.h"
 
 #include <sys/socket.h>
 #include <sys/un.h>
 
 #include "base/logging.h"
 #include "base/posix/eintr_wrapper.h"
+#include "net/base/ip_endpoint.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_util.h"
 #include "net/socket/socket_libevent.h"
 
 namespace net {
 
 UnixDomainClientSocket::UnixDomainClientSocket(const std::string& socket_path,
                                                bool use_abstract_namespace)
     : socket_path_(socket_path),
       use_abstract_namespace_(use_abstract_namespace) {
@@ skipping 69 matching lines @@
 
 bool UnixDomainClientSocket::IsConnected() const {
   return socket_ && socket_->IsConnected();
 }
 
 bool UnixDomainClientSocket::IsConnectedAndIdle() const {
   return socket_ && socket_->IsConnectedAndIdle();
 }
 
 int UnixDomainClientSocket::GetPeerAddress(IPEndPoint* address) const {
-  NOTIMPLEMENTED();
-  return ERR_NOT_IMPLEMENTED;
+  // Unix domain sockets have no valid associated addr/port;
+  // return either not connected or address invalid.
+  DCHECK(address);
+
+  if (!IsConnected())
+    return ERR_SOCKET_NOT_CONNECTED;
+
+  return ERR_ADDRESS_INVALID;
 }
 
 int UnixDomainClientSocket::GetLocalAddress(IPEndPoint* address) const {
-  NOTIMPLEMENTED();
-  return ERR_NOT_IMPLEMENTED;
+  // Unix domain sockets have no valid associated addr/port;
+  // return either not connected or address invalid.
+  DCHECK(address);
+
+  if (!socket_)
+    return ERR_SOCKET_NOT_CONNECTED;
+
+  return ERR_ADDRESS_INVALID;
 }
 
 const BoundNetLog& UnixDomainClientSocket::NetLog() const {
   return net_log_;
 }
 
 void UnixDomainClientSocket::SetSubresourceSpeculation() {
 }
 
 void UnixDomainClientSocket::SetOmniboxSpeculation() {
@@ skipping 44 matching lines @@
 SocketDescriptor UnixDomainClientSocket::ReleaseConnectedSocket() {
   DCHECK(socket_);
   DCHECK(socket_->IsConnected());
 
   SocketDescriptor socket_fd = socket_->ReleaseConnectedSocket();
   socket_.reset();
   return socket_fd;
 }
 
 }  // namespace net