make SetReceiveBufferSize and SetSendBufferSize return net error codes (instead of bools)

remoting/protocol/fake_session.cc

Index: remoting/protocol/fake_session.cc
diff --git a/remoting/protocol/fake_session.cc b/remoting/protocol/fake_session.cc
index 1ce06757239beb79ac3f9947a3e3f871cb4c25b8..05f2bced169ba3112172718af0912728b65e7a0b 100644
--- a/remoting/protocol/fake_session.cc
+++ b/remoting/protocol/fake_session.cc
@@ -136,13 +136,14 @@ void FakeSocket::DoWrite(net::IOBuffer* buf, int buf_len) {
   }
 }
 
-bool FakeSocket::SetReceiveBufferSize(int32 size) {
+int FakeSocket::SetReceiveBufferSize(int32 size) {
   NOTIMPLEMENTED();
-  return false;
+  return net::ERR_NOT_IMPLEMENTED;
 }
-bool FakeSocket::SetSendBufferSize(int32 size) {
+
+int FakeSocket::SetSendBufferSize(int32 size) {
   NOTIMPLEMENTED();
-  return false;
+  return net::ERR_NOT_IMPLEMENTED;
 }
 
 int FakeSocket::Connect(const net::CompletionCallback& callback) {
@@ -263,13 +264,14 @@ int FakeUdpSocket::Write(net::IOBuffer* buf, int buf_len,
   return buf_len;
 }
 
-bool FakeUdpSocket::SetReceiveBufferSize(int32 size) {
+int FakeUdpSocket::SetReceiveBufferSize(int32 size) {
   NOTIMPLEMENTED();
-  return false;
+  return net::ERR_NOT_IMPLEMENTED;
 }
-bool FakeUdpSocket::SetSendBufferSize(int32 size) {
+
+int FakeUdpSocket::SetSendBufferSize(int32 size) {
   NOTIMPLEMENTED();
-  return false;
+  return net::ERR_NOT_IMPLEMENTED;
 }
 
 FakeSession::FakeSession()