[Interpreter] Add native function literal support.

src/interpreter/bytecode-generator.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/interpreter/bytecode-generator.h"
 
 #include "src/ast/scopes.h"
 #include "src/compiler.h"
 #include "src/interpreter/bytecode-register-allocator.h"
 #include "src/interpreter/control-flow-builders.h"
@@ skipping 1195 matching lines @@
 }
 
 
 void BytecodeGenerator::VisitClassLiteral(ClassLiteral* expr) {
   UNIMPLEMENTED();
 }
 
 
 void BytecodeGenerator::VisitNativeFunctionLiteral(
     NativeFunctionLiteral* expr) {
-  UNIMPLEMENTED();
+  // Find or build a shared function info for the native function template.
+  Handle<SharedFunctionInfo> shared_info =
+      Compiler::GetSharedFunctionInfoForNative(expr->extension(), expr->name());
+  builder()->CreateClosure(shared_info, NOT_TENURED);
+  execution_result()->SetResultInAccumulator();
 }
 
 
 void BytecodeGenerator::VisitDoExpression(DoExpression* expr) {
   UNIMPLEMENTED();
 }
 
 
 void BytecodeGenerator::VisitConditional(Conditional* expr) {
   // TODO(rmcilroy): Spot easy cases where there code would not need to
@@ skipping 1274 matching lines @@
 }
 
 
 int BytecodeGenerator::feedback_index(FeedbackVectorSlot slot) const {
   return info()->feedback_vector()->GetIndex(slot);
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8