Make ClassFinalizer indifferent on whether we are generating a snapshot or not.

runtime/vm/object.h

 // Copyright (c) 2012, 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 VM_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 2959 matching lines @@
     return RoundedAllocationSize(sizeof(RawApiError));
   }
 
   static RawApiError* New(const String& message,
                           Heap::Space space = Heap::kNew);
 
   virtual const char* ToErrorCString() const;
 
  private:
   void set_message(const String& message) const;
+  static RawApiError* New();
 
   HEAP_OBJECT_IMPLEMENTATION(ApiError, Error);
   friend class Class;
 };
 
 
 class LanguageError : public Error {
  public:
   RawString* message() const { return raw_ptr()->message_; }
   static intptr_t message_offset() {
     return OFFSET_OF(RawLanguageError, message_);
   }
 
   static intptr_t InstanceSize() {
     return RoundedAllocationSize(sizeof(RawLanguageError));
   }
 
   static RawLanguageError* New(const String& message,
                                Heap::Space space = Heap::kNew);
 
   virtual const char* ToErrorCString() const;
 
  private:
   void set_message(const String& message) const;
+  static RawLanguageError* New();
 
   HEAP_OBJECT_IMPLEMENTATION(LanguageError, Error);
   friend class Class;
 };
 
 
 class UnhandledException : public Error {
  public:
   RawInstance* exception() const { return raw_ptr()->exception_; }
   static intptr_t exception_offset() {
@@ skipping 2502 matching lines @@
     if (this->CharAt(i) != str.CharAt(begin_index + i)) {
       return false;
     }
   }
   return true;
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_