Store the ScopeInfo in WithContexts

src/factory.cc

 // Copyright 2014 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/factory.h"
 
 #include "src/accessors.h"
 #include "src/allocation-site-scopes.h"
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
@@ skipping 816 matching lines @@
   Handle<Context> context = Handle<Context>::cast(array);
   context->set_closure(*function);
   context->set_previous(*previous);
   context->set_extension(*extension);
   context->set_native_context(previous->native_context());
   context->set(Context::THROWN_OBJECT_INDEX, *thrown_object);
   return context;
 }
 
 Handle<Context> Factory::NewDebugEvaluateContext(Handle<Context> previous,
+                                                 Handle<ScopeInfo> scope_info,
                                                  Handle<JSReceiver> extension,
                                                  Handle<Context> wrapped,
                                                  Handle<StringSet> whitelist) {
   STATIC_ASSERT(Context::WHITE_LIST_INDEX == Context::MIN_CONTEXT_SLOTS + 1);
+  Handle<ContextExtension> context_extension = NewContextExtension(
+      scope_info, extension.is_null() ? Handle<Object>::cast(undefined_value())
+                                      : Handle<Object>::cast(extension));
   Handle<FixedArray> array = NewFixedArray(Context::MIN_CONTEXT_SLOTS + 2);
   array->set_map_no_write_barrier(*debug_evaluate_context_map());
   Handle<Context> c = Handle<Context>::cast(array);
   c->set_closure(wrapped.is_null() ? previous->closure() : wrapped->closure());
   c->set_previous(*previous);
   c->set_native_context(previous->native_context());
-  if (!extension.is_null()) c->set(Context::EXTENSION_INDEX, *extension);
+  c->set_extension(*context_extension);
   if (!wrapped.is_null()) c->set(Context::WRAPPED_CONTEXT_INDEX, *wrapped);
   if (!whitelist.is_null()) c->set(Context::WHITE_LIST_INDEX, *whitelist);
   return c;
 }
 
 Handle<Context> Factory::NewWithContext(Handle<JSFunction> function,
                                         Handle<Context> previous,
+                                        Handle<ScopeInfo> scope_info,
                                         Handle<JSReceiver> extension) {
+  Handle<ContextExtension> context_extension =
+      NewContextExtension(scope_info, extension);
   Handle<FixedArray> array = NewFixedArray(Context::MIN_CONTEXT_SLOTS);
   array->set_map_no_write_barrier(*with_context_map());
   Handle<Context> context = Handle<Context>::cast(array);
   context->set_closure(*function);
   context->set_previous(*previous);
-  context->set_extension(*extension);
+  context->set_extension(*context_extension);
   context->set_native_context(previous->native_context());
   return context;
 }
 
 
 Handle<Context> Factory::NewBlockContext(Handle<JSFunction> function,
                                          Handle<Context> previous,
                                          Handle<ScopeInfo> scope_info) {
   DCHECK_EQ(scope_info->scope_type(), BLOCK_SCOPE);
   Handle<FixedArray> array = NewFixedArray(scope_info->ContextLength());
@@ skipping 1636 matching lines @@
     Handle<AccessorInfo> prototype =
         Accessors::FunctionPrototypeInfo(isolate(), attribs);
     AccessorConstantDescriptor d(Handle<Name>(Name::cast(prototype->name())),
                                  prototype, attribs);
     map->AppendDescriptor(&d);
   }
 }
 
 }  // namespace internal
 }  // namespace v8