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

src/compiler.cc

 // Copyright 2009 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 19 matching lines @@
 #include "bootstrapper.h"
 #include "codegen-inl.h"
 #include "compilation-cache.h"
 #include "compiler.h"
 #include "debug.h"
 #include "oprofile-agent.h"
 #include "rewriter.h"
 #include "scopes.h"
 #include "usage-analyzer.h"
 
-namespace v8 { namespace internal {
+namespace v8 {
+namespace internal {
 
 static Handle<Code> MakeCode(FunctionLiteral* literal,
                              Handle<Script> script,
                              Handle<Context> context,
                              bool is_eval) {
   ASSERT(literal != NULL);
 
   // Rewrite the AST by introducing .result assignments where needed.
   if (!Rewriter::Process(literal) || !AnalyzeVariableUsage(literal)) {
     // Signal a stack overflow by returning a null handle.  The stack
@@ skipping 333 matching lines @@
   // Set the expected number of properties for instances.
   SetExpectedNofPropertiesFromEstimate(shared, lit->expected_property_count());
 
   // Check the function has compiled code.
   ASSERT(shared->is_compiled());
   return true;
 }
 
 
 } }  // namespace v8::internal