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

src/jsregexp-inl.h

 // Copyright 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.
 
 #ifndef V8_JSREGEXP_INL_H_
 #define V8_JSREGEXP_INL_H_
 
 
 #include "jsregexp.h"
 #include "regexp-macro-assembler.h"
 
 
-namespace v8 { namespace internal {
+namespace v8 {
+namespace internal {
 
 
 template <typename C>
 bool ZoneSplayTree<C>::Insert(const Key& key, Locator* locator) {
   if (is_empty()) {
     // If the tree is empty, insert the new node.
     root_ = new Node(key, C::kNoValue);
   } else {
     // Splay on the key to move the last node on the search path
     // for the key to the root of the tree.
@@ skipping 203 matching lines @@
   DoForEach<Node, Callback>(node->left(), callback);
   callback->Call(node->key(), node->value());
   DoForEach<Node, Callback>(node->right(), callback);
 }
 
 
 }}  // namespace v8::internal
 
 
 #endif  // V8_JSREGEXP_INL_H_