Remove unneeded stringprintf.h usage in chrome/ and net/

net/http/http_proxy_client_socket.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/http/http_proxy_client_socket.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/profiler/scoped_tracker.h"
 #include "base/strings/string_util.h"
-#include "base/strings/stringprintf.h"
 #include "base/values.h"
 #include "net/base/auth.h"
 #include "net/base/host_port_pair.h"
 #include "net/base/io_buffer.h"
 #include "net/base/proxy_delegate.h"
 #include "net/http/http_basic_stream.h"
 #include "net/http/http_network_session.h"
 #include "net/http/http_request_info.h"
 #include "net/http/http_response_headers.h"
 #include "net/http/http_stream_parser.h"
@@ skipping 503 matching lines @@
     next_state_ = STATE_DRAIN_BODY;
     return OK;
   }
 
   return DidDrainBodyForAuthRestart();
 }
 
 //----------------------------------------------------------------
 
 }  // namespace net