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

net/spdy/spdy_proxy_client_socket.cc

Index: net/spdy/spdy_proxy_client_socket.cc
diff --git a/net/spdy/spdy_proxy_client_socket.cc b/net/spdy/spdy_proxy_client_socket.cc
index ab5387a9e32f46cac06038f7068775799cc6c8a1..dcbdaea811056c113d31c8002c7727125900c47f 100644
--- a/net/spdy/spdy_proxy_client_socket.cc
+++ b/net/spdy/spdy_proxy_client_socket.cc
@@ -237,16 +237,16 @@ int SpdyProxyClientSocket::Write(IOBuffer* buf, int buf_len,
   return ERR_IO_PENDING;
 }
 
-bool SpdyProxyClientSocket::SetReceiveBufferSize(int32 size) {
+int SpdyProxyClientSocket::SetReceiveBufferSize(int32 size) {
   // Since this StreamSocket sits on top of a shared SpdySession, it
-  // is not safe for callers to set change this underlying socket.
-  return false;
+  // is not safe for callers to change this underlying socket.
+  return ERR_METHOD_NOT_SUPPORTED;
 }
 
-bool SpdyProxyClientSocket::SetSendBufferSize(int32 size) {
+int SpdyProxyClientSocket::SetSendBufferSize(int32 size) {
   // Since this StreamSocket sits on top of a shared SpdySession, it
-  // is not safe for callers to set change this underlying socket.
-  return false;
+  // is not safe for callers to change this underlying socket.
+  return ERR_METHOD_NOT_SUPPORTED;

[wtc, 2014/03/29 13:30:12]

IMPORTANT: Use ERR_NOT_IMPLEMENTED or some other error in these two methods.

ERR_METHOD_NOT_SUPPORTED is an HTTP error code. It means the server doesn't
support the HTTP method (GET, POST, etc.).

[jar (doing other things), 2014/04/01 23:50:39]

Done.

 }
 
 int SpdyProxyClientSocket::GetPeerAddress(IPEndPoint* address) const {