Add missing (and remove superfluous) 'explicit' from constructors.

net/socket/buffered_write_stream_socket.h

 // 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.
 
 #ifndef NET_SOCKET_BUFFERED_WRITE_STREAM_SOCKET_H_
 #define NET_SOCKET_BUFFERED_WRITE_STREAM_SOCKET_H_
 
 #include "base/memory/weak_ptr.h"
 #include "net/base/net_log.h"
 #include "net/socket/stream_socket.h"
@@ skipping 15 matching lines @@
 // issued as only one Write() to the wrapped socket. This is useful to force
 // multiple requests to be issued in a single packet, as is needed to trigger
 // edge cases in HTTP pipelining.
 //
 // Note that the Write() always returns synchronously. It will either buffer the
 // entire input or return the most recently reported error.
 //
 // There are no bounds on the local buffer size. Use carefully.
 class NET_EXPORT_PRIVATE BufferedWriteStreamSocket : public StreamSocket {
  public:
-  BufferedWriteStreamSocket(StreamSocket* socket_to_wrap);
+  explicit BufferedWriteStreamSocket(StreamSocket* socket_to_wrap);
   virtual ~BufferedWriteStreamSocket();
 
   // Socket interface
   virtual int Read(IOBuffer* buf, int buf_len,
                    const CompletionCallback& callback) OVERRIDE;
   virtual int Write(IOBuffer* buf, int buf_len,
                     const CompletionCallback& callback) OVERRIDE;
   virtual bool SetReceiveBufferSize(int32 size) OVERRIDE;
   virtual bool SetSendBufferSize(int32 size) OVERRIDE;
 
@@ skipping 24 matching lines @@
   scoped_refptr<GrowableIOBuffer> backup_buffer_;
   base::WeakPtrFactory<BufferedWriteStreamSocket> weak_factory_;
   bool callback_pending_;
   bool wrapped_write_in_progress_;
   int error_;
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_STREAM_SOCKET_H_