Store parts in Kernel Library, resynthesize parts in Analyzer.

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 4218 matching lines @@
   ReadFlags();                                   // read flags.
   SkipListOfExpressions();                       // Read annotations.
   ReadCanonicalNameReference();                  // read target_reference.
   ReadStringReference();                         // read name_index.
   intptr_t combinator_count = ReadListLength();  // read list length.
   for (intptr_t i = 0; i < combinator_count; ++i) {
     SkipLibraryCombinator();
   }
 }
 
+void StreamingFlowGraphBuilder::SkipLibraryPart() {
+  SkipListOfExpressions();  // Read annotations.
+  ReadStringReference();    // read uri_index.
+}
+
 void StreamingFlowGraphBuilder::SkipLibraryTypedef() {
   SkipCanonicalNameReference();  // read canonical name.
   ReadPosition();                // read position.
   SkipStringReference();         // read name index.
   ReadUInt();                    // read source_uri_index.
   SkipTypeParametersList();      // read type parameters.
   SkipDartType();                // read type.
 }
 
 TokenPosition StreamingFlowGraphBuilder::ReadPosition(bool record) {
@@ skipping 3046 matching lines @@
     }
   }
 
   return Array::Handle(Array::null());
 }
 
 }  // namespace kernel
 }  // namespace dart
 
 #endif  // !defined(DART_PRECOMPILED_RUNTIME)