Revert two Kernel changes that were causing test failures.

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"
 
@@ skipping 4207 matching lines @@
     SkipLibraryCombinator();
   }
 }
 
 void StreamingFlowGraphBuilder::SkipLibraryTypedef() {
   SkipCanonicalNameReference();  // read canonical name.
   ReadPosition();                // read position.
   SkipStringReference();         // read name index.
   ReadUInt();                    // read source_uri_index.
   SkipTypeParametersList();      // read type parameters.
-  ReadUInt();                    // read required parameter count
-
-  intptr_t positional_count = ReadListLength();
-  for (intptr_t i = 0; i < positional_count; i++) {
-    SkipVariableDeclaration();
-  }
-
-  intptr_t named_count = ReadListLength();
-  for (intptr_t i = 0; i < named_count; i++) {
-    SkipVariableDeclaration();
-  }
-
   SkipDartType();                // read type.
 }
 
 TokenPosition StreamingFlowGraphBuilder::ReadPosition(bool record) {
   TokenPosition position = reader_->ReadPosition();
   if (record) {
     record_token_position(position);
   }
   return position;
 }
@@ skipping 3033 matching lines @@
     }
   }
 
   return Array::Handle(Array::null());
 }
 
 }  // namespace kernel
 }  // namespace dart
 
 #endif  // !defined(DART_PRECOMPILED_RUNTIME)