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

src/codegen.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 20 matching lines @@
 #include "codegen-inl.h"
 #include "debug.h"
 #include "oprofile-agent.h"
 #include "prettyprinter.h"
 #include "register-allocator-inl.h"
 #include "rewriter.h"
 #include "runtime.h"
 #include "scopeinfo.h"
 #include "stub-cache.h"
 
-namespace v8 { namespace internal {
+namespace v8 {
+namespace internal {
 
 
 CodeGenerator* CodeGeneratorScope::top_ = NULL;
 
 
 DeferredCode::DeferredCode(CodeGenerator* generator)
   : generator_(generator),
     masm_(generator->masm()),
     exit_(JumpTarget::BIDIRECTIONAL),
     statement_position_(masm_->current_statement_position()),
@@ skipping 580 matching lines @@
 void ArgumentsAccessStub::Generate(MacroAssembler* masm) {
   switch (type_) {
     case READ_LENGTH: GenerateReadLength(masm); break;
     case READ_ELEMENT: GenerateReadElement(masm); break;
     case NEW_OBJECT: GenerateNewObject(masm); break;
   }
 }
 
 
 } }  // namespace v8::internal