VM: [Kernel] Cherry-pick from dart-lang/kernel_sdk

runtime/vm/kernel_reader.h

 // 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.
 
 #ifndef RUNTIME_VM_KERNEL_READER_H_
 #define RUNTIME_VM_KERNEL_READER_H_
 
 #if !defined(DART_PRECOMPILED_RUNTIME)
 #include <map>
 
@@ skipping 36 matching lines @@
 
   void Insert(KernelType* node, VmType* object) { map_[node] = object; }
 
  private:
   typedef typename std::map<KernelType*, VmType*> MapType;
   MapType map_;
 };
 
 class KernelReader {
  public:
-  KernelReader(const uint8_t* buffer, intptr_t len, bool bootstrapping = false)
+  KernelReader(const uint8_t* buffer, intptr_t len)
       : thread_(dart::Thread::Current()),
         zone_(thread_->zone()),
         isolate_(thread_->isolate()),
         scripts_(Array::ZoneHandle(zone_)),
         program_(NULL),
         translation_helper_(this, thread_, zone_, isolate_),
         type_translator_(&translation_helper_,
                          &active_class_,
                          /*finalize=*/false),
-        bootstrapping_(bootstrapping),
         buffer_(buffer),
         buffer_length_(len) {}
 
   // Returns either pointer to a program or null.
   Program* ReadPrecompiledProgram();
 
   // Returns either a library or a failure object.
   dart::Object& ReadProgram();
 
   static void SetupFunctionParameters(TranslationHelper translation_helper_,
@@ skipping 37 matching lines @@
 
   dart::Thread* thread_;
   dart::Zone* zone_;
   dart::Isolate* isolate_;
   Array& scripts_;
   Program* program_;
   ActiveClass active_class_;
   BuildingTranslationHelper translation_helper_;
   DartTypeTranslator type_translator_;
 
-  bool bootstrapping_;
-
   const uint8_t* buffer_;
   intptr_t buffer_length_;
 
   Mapping<Library, dart::Library> libraries_;
   Mapping<Class, dart::Class> classes_;
 };
 
 }  // namespace kernel
 }  // namespace dart
 
 #endif  // !defined(DART_PRECOMPILED_RUNTIME)
 #endif  // RUNTIME_VM_KERNEL_READER_H_