Revert "Store actual Reference(s) for additional exports."

runtime/vm/kernel_binary_flowgraph.cc

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/kernel_binary_flowgraph.h"
 #include "vm/compiler.h"
 #include "vm/longjump.h"
 #include "vm/object_store.h"
 
 #if !defined(DART_PRECOMPILED_RUNTIME)
@@ skipping 416 matching lines @@
     case kAnnotations:
       builder_->SkipListOfExpressions();  // read annotations.
       if (++next_read_ == field) return;
     case kDependencies: {
       intptr_t dependency_count = builder_->ReadUInt();  // read list length.
       for (intptr_t i = 0; i < dependency_count; ++i) {
         builder_->SkipLibraryDependency();
       }
       if (++next_read_ == field) return;
     }
-    case kAdditionalExports: {
-      intptr_t name_count = builder_->ReadUInt();
-      for (intptr_t i = 0; i < name_count; ++i) {
-        builder_->SkipCanonicalNameReference();
-      }
-      if (++next_read_ == field) return;
-    }
     case kParts: {
       intptr_t part_count = builder_->ReadUInt();  // read list length.
       for (intptr_t i = 0; i < part_count; ++i) {
         builder_->SkipLibraryPart();
       }
       if (++next_read_ == field) return;
     }
     case kTypedefs: {
       intptr_t typedef_count = builder_->ReadListLength();  // read list length.
       for (intptr_t i = 0; i < typedef_count; i++) {
@@ skipping 7381 matching lines @@
     }
   }
 
   return Array::Handle(Array::null());
 }
 
 }  // namespace kernel
 }  // namespace dart
 
 #endif  // !defined(DART_PRECOMPILED_RUNTIME)