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

src/frames.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 16 matching lines @@
 
 #include "v8.h"
 
 #include "frames-inl.h"
 #include "mark-compact.h"
 #include "scopeinfo.h"
 #include "string-stream.h"
 #include "top.h"
 #include "zone-inl.h"
 
-namespace v8 { namespace internal {
+namespace v8 {
+namespace internal {
 
 // Iterator that supports traversing the stack handlers of a
 // particular frame. Needs to know the top of the handler chain.
 class StackHandlerIterator BASE_EMBEDDED {
  public:
   StackHandlerIterator(const StackFrame* frame, StackHandler* handler)
       : limit_(frame->fp()), handler_(handler) {
     // Make sure the handler has already been unwound to this frame.
     ASSERT(frame->sp() <= handler->address());
   }
@@ skipping 683 matching lines @@
         reg_code[i++] = r;
 
     ASSERT(i == kNumJSCallerSaved);
   }
   ASSERT(0 <= n && n < kNumJSCallerSaved);
   return reg_code[n];
 }
 
 
 } }  // namespace v8::internal