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

jingle/glue/pseudotcp_adapter_unittest.cc

 // Copyright (c) 2012 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 "jingle/glue/pseudotcp_adapter.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 124 matching lines @@
           FROM_HERE,
           base::Bind(&FakeSocket::AppendInputPacket,
                      base::Unretained(peer_socket_),
                      std::vector<char>(buf->data(), buf->data() + buf_len)),
           base::TimeDelta::FromMilliseconds(latency_ms_));
     }
 
     return buf_len;
   }
 
-  virtual bool SetReceiveBufferSize(int32 size) OVERRIDE {
+  virtual int SetReceiveBufferSize(int32 size) OVERRIDE {
     NOTIMPLEMENTED();
-    return false;
+    return net::ERR_NOT_IMPLEMENTED;
   }
-  virtual bool SetSendBufferSize(int32 size) OVERRIDE {
+  virtual int SetSendBufferSize(int32 size) OVERRIDE {
     NOTIMPLEMENTED();
-    return false;
+    return net::ERR_NOT_IMPLEMENTED;
   }
 
  private:
   scoped_refptr<net::IOBuffer> read_buffer_;
   int read_buffer_size_;
   net::CompletionCallback read_callback_;
 
   std::deque<std::vector<char> > incoming_packets_;
 
   FakeSocket* peer_socket_;
@@ skipping 271 matching lines @@
                            client_pseudotcp_.get());
 
   tester->Start();
   message_loop_.Run();
   tester->CheckResults();
 }
 
 }  // namespace
 
 }  // namespace jingle_glue