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

net/socket/client_socket_pool_base_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 "net/socket/client_socket_pool_base.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 127 matching lines @@
     }
     return ERR_UNEXPECTED;
   }
 
   virtual int Write(
       IOBuffer* /* buf */, int len,
       const CompletionCallback& /* callback */) OVERRIDE {
     was_used_to_convey_data_ = true;
     return len;
   }
-  virtual bool SetReceiveBufferSize(int32 size) OVERRIDE { return true; }
-  virtual bool SetSendBufferSize(int32 size) OVERRIDE { return true; }
+  virtual int SetReceiveBufferSize(int32 size) OVERRIDE { return OK; }
+  virtual int SetSendBufferSize(int32 size) OVERRIDE { return OK; }
 
   // StreamSocket implementation.
   virtual int Connect(const CompletionCallback& callback) OVERRIDE {
     connected_ = true;
     return OK;
   }
 
   virtual void Disconnect() OVERRIDE { connected_ = false; }
   virtual bool IsConnected() const OVERRIDE { return connected_; }
   virtual bool IsConnectedAndIdle() const OVERRIDE {
@@ skipping 3960 matching lines @@
   request(1)->handle()->Reset();
   ASSERT_EQ(1, pool_->NumConnectJobsInGroup("a"));
 
   EXPECT_EQ(OK, request(2)->WaitForResult());
   EXPECT_FALSE(request(1)->have_result());
 }
 
 }  // namespace
 
 }  // namespace net