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

net/socket/ssl_client_socket_openssl.cc

Index: net/socket/ssl_client_socket_openssl.cc
diff --git a/net/socket/ssl_client_socket_openssl.cc b/net/socket/ssl_client_socket_openssl.cc
index ef3b130c5dd40dd2465003b0f4c87790b54786f6..126ce39358412d480cc7fc0449262d4e1a181161 100644
--- a/net/socket/ssl_client_socket_openssl.cc
+++ b/net/socket/ssl_client_socket_openssl.cc
@@ -778,11 +778,11 @@ int SSLClientSocketOpenSSL::Write(IOBuffer* buf,
   return rv;
 }
 
-bool SSLClientSocketOpenSSL::SetReceiveBufferSize(int32 size) {
+int SSLClientSocketOpenSSL::SetReceiveBufferSize(int32 size) {
   return transport_->socket()->SetReceiveBufferSize(size);
 }
 
-bool SSLClientSocketOpenSSL::SetSendBufferSize(int32 size) {
+int SSLClientSocketOpenSSL::SetSendBufferSize(int32 size) {
   return transport_->socket()->SetSendBufferSize(size);
 }