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

src/assembler.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 22 matching lines @@
 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 
 #ifndef V8_ASSEMBLER_H_
 #define V8_ASSEMBLER_H_
 
 #include "runtime.h"
 #include "top.h"
 #include "zone-inl.h"
 #include "token.h"
 
-namespace v8 { namespace internal {
+namespace v8 {
+namespace internal {
 
 
 // -----------------------------------------------------------------------------
 // Labels represent pc locations; they are typically jump or call targets.
 // After declaration, a label can be freely used to denote known or (yet)
 // unknown pc location. Assembler::bind() is used to bind a label to the
 // current pc. A label can be bound only once.
 
 class Label BASE_EMBEDDED {
  public:
@@ skipping 386 matching lines @@
 static inline bool is_uint4(int x)  { return is_uintn(x, 4); }
 static inline bool is_uint5(int x)  { return is_uintn(x, 5); }
 static inline bool is_uint8(int x)  { return is_uintn(x, 8); }
 static inline bool is_uint12(int x)  { return is_uintn(x, 12); }
 static inline bool is_uint16(int x)  { return is_uintn(x, 16); }
 static inline bool is_uint24(int x)  { return is_uintn(x, 24); }
 
 } }  // namespace v8::internal
 
 #endif  // V8_ASSEMBLER_H_