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

src/arm/assembler-arm-inl.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 23 matching lines @@
 // significantly by Google Inc.
 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 
 #ifndef V8_ARM_ASSEMBLER_ARM_INL_H_
 #define V8_ARM_ASSEMBLER_ARM_INL_H_
 
 #include "arm/assembler-arm.h"
 #include "cpu.h"
 
 
-namespace v8 { namespace internal {
+namespace v8 {
+namespace internal {
 
 Condition NegateCondition(Condition cc) {
   ASSERT(cc != al);
   return static_cast<Condition>(cc ^ ne);
 }
 
 
 void RelocInfo::apply(int delta) {
   if (RelocInfo::IsInternalReference(rmode_)) {
     // absolute code pointer inside code object moves with the code object.
@@ skipping 185 matching lines @@
   //   CPU::FlushICache(pc, sizeof(target));
   // However, on ARM, no instruction was actually patched by the assignment
   // above; the target address is not part of an instruction, it is patched in
   // the constant pool and is read via a data access; the instruction accessing
   // this address in the constant pool remains unchanged.
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_ASSEMBLER_ARM_INL_H_