Rip out most of our outdated modules implementation.

src/compiler/ast-graph-builder.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/compiler/ast-graph-builder.h"
 
 #include "src/ast/scopes.h"
 #include "src/compiler.h"
 #include "src/compiler/ast-loop-assignment-analyzer.h"
 #include "src/compiler/control-builders.h"
@@ skipping 1171 matching lines @@
     }
   }
 }
 
 
 void AstGraphBuilder::VisitImportDeclaration(ImportDeclaration* decl) {
   UNREACHABLE();
 }
 
 
-void AstGraphBuilder::VisitExportDeclaration(ExportDeclaration* decl) {
-  UNREACHABLE();
-}
-
-
 void AstGraphBuilder::VisitBlock(Block* stmt) {
   BlockBuilder block(this);
   ControlScopeForBreakable scope(this, stmt, &block);
   if (stmt->labels() != nullptr) block.BeginBlock();
   if (stmt->scope() == nullptr) {
     // Visit statements in the same scope, no declarations.
     VisitStatements(stmt->statements());
   } else {
     // Visit declarations and statements in a block scope.
     if (stmt->scope()->NeedsContext()) {
@@ skipping 3179 matching lines @@
     // Phi does not exist yet, introduce one.
     value = NewPhi(inputs, value, control);
     value->ReplaceInput(inputs - 1, other);
   }
   return value;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8