Strip Interface class of most of its logic, make it all about Module exports

src/runtime/runtime-scopes.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/v8.h"
 
 #include "src/accessors.h"
 #include "src/arguments.h"
 #include "src/frames-inl.h"
 #include "src/runtime/runtime-utils.h"
@@ skipping 783 matching lines @@
           PropertyAttributes attr =
               IsImmutableVariableMode(mode) ? FROZEN : SEALED;
           Handle<AccessorInfo> info =
               Accessors::MakeModuleExport(name, index, attr);
           Handle<Object> result =
               JSObject::SetAccessor(module, info).ToHandleChecked();
           DCHECK(!result->IsUndefined());
           USE(result);
           break;
         }
-        case MODULE: {
-          Object* referenced_context = Context::cast(host_context)->get(index);
-          Handle<JSModule> value(Context::cast(referenced_context)->module());
-          JSObject::SetOwnPropertyIgnoreAttributes(module, name, value, FROZEN)
-              .Assert();
-          break;
-        }
         case INTERNAL:
         case TEMPORARY:
         case DYNAMIC:
         case DYNAMIC_GLOBAL:
         case DYNAMIC_LOCAL:
           UNREACHABLE();
       }
     }
 
     JSObject::PreventExtensions(module).Assert();
@@ skipping 311 matching lines @@
   return Smi::FromInt(frame->GetArgumentsLength());
 }
 
 
 RUNTIME_FUNCTION(RuntimeReference_Arguments) {
   SealHandleScope shs(isolate);
   return __RT_impl_Runtime_GetArgumentsProperty(args, isolate);
 }
 }
 }  // namespace v8::internal