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

src/flags.cc

 // Copyright 2006-2008 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 17 matching lines @@
 #include <ctype.h>
 #include <stdlib.h>
 
 #include "v8.h"
 
 #include "platform.h"
 #include "smart-pointer.h"
 #include "string-stream.h"
 
 
-namespace v8 { namespace internal {
+namespace v8 {
+namespace internal {
 
 // Define all of our flags.
 #define FLAG_MODE_DEFINE
 #include "flag-definitions.h"
 
 // Define all of our flags default values.
 #define FLAG_MODE_DEFINE_DEFAULTS
 #include "flag-definitions.h"
 
 namespace {
@@ skipping 496 matching lines @@
 const char** JSArguments::argv() { return argv_; }
 const char*& JSArguments::operator[](int idx) { return argv_[idx]; }
 JSArguments& JSArguments::operator=(JSArguments args) {
     argc_ = args.argc_;
     argv_ = args.argv_;
     return *this;
 }
 
 
 } }  // namespace v8::internal