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

src/hydrogen.cc

 // Copyright 2013 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/hydrogen.h"
 
 #include <sstream>
 
 #include "src/v8.h"
 
@@ skipping 11548 matching lines @@
     ExportDeclaration* declaration) {
   UNREACHABLE();
 }
 
 
 void HOptimizedGraphBuilder::VisitModuleLiteral(ModuleLiteral* module) {
   UNREACHABLE();
 }
 
 
-void HOptimizedGraphBuilder::VisitModuleVariable(ModuleVariable* module) {
-  UNREACHABLE();
-}
-
-
 void HOptimizedGraphBuilder::VisitModulePath(ModulePath* module) {
   UNREACHABLE();
 }
 
 
 void HOptimizedGraphBuilder::VisitModuleUrl(ModuleUrl* module) {
   UNREACHABLE();
 }
 
 
@@ skipping 1924 matching lines @@
   if (ShouldProduceTraceOutput()) {
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 } }  // namespace v8::internal