[NaCl SDK] Add nacl_io and sdk_util namespaces.

native_client_sdk/src/libraries/nacl_io/mount_node_http.cc

 /* Copyright (c) 2013 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 "nacl_io/mount_node_http.h"
 
 #include <assert.h>
 #include <errno.h>
 #include <stdio.h>
 #include <string.h>
 
 #include <ppapi/c/pp_errors.h>
 
 #include "nacl_io/mount_http.h"
 #include "nacl_io/osinttypes.h"
 
 #if defined(WIN32)
 #define snprintf _snprintf
 #endif
 
+namespace nacl_io {
+
 namespace {
 
 // If we're attempting to read a partial request, but the server returns a full
 // request, we need to read all of the data up to the start of our partial
 // request into a dummy buffer. This is the maximum size of that buffer.
 const size_t MAX_READ_BUFFER_SIZE = 64 * 1024;
 const int32_t STATUSCODE_OK = 200;
 const int32_t STATUSCODE_PARTIAL_CONTENT = 206;
 const int32_t STATUSCODE_FORBIDDEN = 403;
 const int32_t STATUSCODE_NOT_FOUND = 404;
@@ skipping 500 matching lines @@
 
     assert(bytes_read <= bytes_to_read);
     bytes_to_read -= bytes_read;
     out_buffer += bytes_read;
   }
 
   *out_bytes = count;
   return 0;
 }
 
+}  // namespace nacl_io
+