Add optional FunctionType.positionalParameterNames and use them to resynthesize function-type forma…

runtime/vm/kernel_binary_flowgraph.h

 // Copyright (c) 2017, 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.
 
 #ifndef RUNTIME_VM_KERNEL_BINARY_FLOWGRAPH_H_
 #define RUNTIME_VM_KERNEL_BINARY_FLOWGRAPH_H_
 
 #if !defined(DART_PRECOMPILED_RUNTIME)
 
 #include <map>
@@ skipping 385 matching lines @@
   const dart::String& ReadNameAsSetterName();
   const dart::String& ReadNameAsFieldName();
   void SkipStringReference();
   void SkipCanonicalNameReference();
   void SkipDartType();
   void SkipOptionalDartType();
   void SkipInterfaceType(bool simple);
   void SkipFunctionType(bool simple);
   void SkipListOfExpressions();
   void SkipListOfDartTypes();
+  void SkipListOfStrings();
   void SkipListOfVariableDeclarations();
   void SkipTypeParametersList();
   void SkipExpression();
   void SkipStatement();
   void SkipFunctionNode();
   void SkipName();
   void SkipArguments();
   void SkipVariableDeclaration();
   void SkipLibraryCombinator();
   void SkipLibraryDependency();
@@ skipping 1127 matching lines @@
  private:
   Reader* reader_;
   intptr_t saved_offset_;
 };
 
 }  // namespace kernel
 }  // namespace dart
 
 #endif  // !defined(DART_PRECOMPILED_RUNTIME)
 #endif  // RUNTIME_VM_KERNEL_BINARY_FLOWGRAPH_H_