Implement basic code generation for arrow functions

src/preparser.cc

Index: src/preparser.cc
diff --git a/src/preparser.cc b/src/preparser.cc
index 8c8746d5e04a50315e1207773b208660f22ec9e7..fd180427db4f8b6d461556622a7426cf32cf5c7b 100644
--- a/src/preparser.cc
+++ b/src/preparser.cc
@@ -110,10 +110,12 @@ PreParser::PreParseResult PreParser::PreParseLazyFunction(
   log_ = log;
   // Lazy functions always have trivial outer scopes (no with/catch scopes).
   PreParserScope top_scope(scope_, GLOBAL_SCOPE);
-  FunctionState top_state(&function_state_, &scope_, &top_scope);
+  FunctionState top_state(&function_state_, &scope_, &top_scope, NULL,
+                          this->ast_value_factory());
   scope_->SetStrictMode(strict_mode);
   PreParserScope function_scope(scope_, FUNCTION_SCOPE);
-  FunctionState function_state(&function_state_, &scope_, &function_scope);
+  FunctionState function_state(&function_state_, &scope_, &function_scope, NULL,
+                               this->ast_value_factory());
   function_state.set_is_generator(is_generator);
   ASSERT_EQ(Token::LBRACE, scanner()->current_token());
   bool ok = true;
@@ -807,7 +809,8 @@ PreParser::Expression PreParser::ParseFunctionLiteral(
   // Parse function body.
   ScopeType outer_scope_type = scope_->type();
   PreParserScope function_scope(scope_, FUNCTION_SCOPE);
-  FunctionState function_state(&function_state_, &scope_, &function_scope);
+  FunctionState function_state(&function_state_, &scope_, &function_scope, NULL,
+                               this->ast_value_factory());
   function_state.set_is_generator(is_generator);
   //  FormalParameterList ::
   //    '(' (Identifier)*[','] ')'