base::Bind: Convert Socket::Write.

net/socket/client_socket_pool_base_unittest.cc

Index: net/socket/client_socket_pool_base_unittest.cc
diff --git a/net/socket/client_socket_pool_base_unittest.cc b/net/socket/client_socket_pool_base_unittest.cc
index 5ef38a7e75cc44451e940221e2c87cfa5209fb9d..6405362eb17ff77ab2a809b8d6b38735237edddb 100644
--- a/net/socket/client_socket_pool_base_unittest.cc
+++ b/net/socket/client_socket_pool_base_unittest.cc
@@ -78,6 +78,11 @@ class MockClientSocket : public StreamSocket {
     was_used_to_convey_data_ = true;
     return len;
   }
+  virtual int Write(
+      IOBuffer* /* buf */, int len, const CompletionCallback& /* callback */) {
+    was_used_to_convey_data_ = true;
+    return len;
+  }
   virtual bool SetReceiveBufferSize(int32 size) { return true; }
   virtual bool SetSendBufferSize(int32 size) { return true; }