Split nested namespaces declaration in two lines in accordance with C++ Style Guide.

src/platform-posix.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 29 matching lines @@
 
 #include <arpa/inet.h>
 #include <netinet/in.h>
 #include <netdb.h>
 
 #include "v8.h"
 
 #include "platform.h"
 
 
-namespace v8 { namespace internal {
+namespace v8 {
+namespace internal {
 
 
 // ----------------------------------------------------------------------------
 // POSIX date/time support.
 //
 
 int OS::GetUserTime(uint32_t* secs,  uint32_t* usecs) {
   struct rusage usage;
 
   if (getrusage(RUSAGE_SELF, &usage) < 0) return -1;
@@ skipping 280 matching lines @@
   return ntohl(value);
 }
 
 
 Socket* OS::CreateSocket() {
   return new POSIXSocket();
 }
 
 
 } }  // namespace v8::internal