Remove deprecated v8::preparser namespace.

src/parser.h

Index: src/parser.h
diff --git a/src/parser.h b/src/parser.h
index e5853bd582488cae0bbfba41bbdb901ab5813db2..055103e8010153b887669041e338068b73cced23 100644
--- a/src/parser.h
+++ b/src/parser.h
@@ -841,7 +841,7 @@ class Parser BASE_EMBEDDED {
                             Handle<String> type,
                             Vector< Handle<Object> > arguments);
 
-  preparser::PreParser::PreParseResult LazyParseFunctionLiteral(
+  PreParser::PreParseResult LazyParseFunctionLiteral(
        SingletonLogger* logger);
 
   AstNodeFactory<AstConstructionVisitor>* factory() {
@@ -853,7 +853,7 @@ class Parser BASE_EMBEDDED {
 
   Handle<Script> script_;
   Scanner scanner_;
-  preparser::PreParser* reusable_preparser_;
+  PreParser* reusable_preparser_;
   Scope* top_scope_;
   Scope* original_scope_;  // for ES5 function declarations in sloppy eval
   FunctionState* current_function_state_;