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

src/disassembler.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 18 matching lines @@
 
 #include "code-stubs.h"
 #include "codegen-inl.h"
 #include "debug.h"
 #include "disasm.h"
 #include "disassembler.h"
 #include "macro-assembler.h"
 #include "serialize.h"
 #include "string-stream.h"
 
-namespace v8 { namespace internal {
+namespace v8 {
+namespace internal {
 
 #ifdef ENABLE_DISASSEMBLER
 
 void Disassembler::Dump(FILE* f, byte* begin, byte* end) {
   for (byte* pc = begin; pc < end; pc++) {
     if (f == NULL) {
       PrintF("%" V8PRIxPTR "  %4" V8PRIdPTR "  %02x\n", pc, pc - begin, *pc);
     } else {
       fprintf(f, "%" V8PRIxPTR "  %4" V8PRIdPTR "  %02x\n",
               reinterpret_cast<uintptr_t>(pc), pc - begin, *pc);
@@ skipping 251 matching lines @@
 
 #else  // ENABLE_DISASSEMBLER
 
 void Disassembler::Dump(FILE* f, byte* begin, byte* end) {}
 int Disassembler::Decode(FILE* f, byte* begin, byte* end) { return 0; }
 void Disassembler::Decode(FILE* f, Code* code) {}
 
 #endif  // ENABLE_DISASSEMBLER
 
 } }  // namespace v8::internal