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

src/conversions.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 15 matching lines @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <stdarg.h>
 
 #include "v8.h"
 
 #include "conversions-inl.h"
 #include "factory.h"
 #include "scanner.h"
 
-namespace v8 { namespace internal {
+namespace v8 {
+namespace internal {
 
 int HexValue(uc32 c) {
   if ('0' <= c && c <= '9')
     return c - '0';
   if ('a' <= c && c <= 'f')
     return c - 'a' + 10;
   if ('A' <= c && c <= 'F')
     return c - 'A' + 10;
   return -1;
 }
@@ skipping 651 matching lines @@
   // Allocate result and fill in the parts.
   StringBuilder builder(result_size + 1);
   builder.AddSubstring(integer_buffer + integer_pos + 1, integer_part_size);
   if (decimal_pos > 0) builder.AddCharacter('.');
   builder.AddSubstring(decimal_buffer, decimal_pos);
   return builder.Finalize();
 }
 
 
 } }  // namespace v8::internal