[serializer] small fixes for blink snapshot.

include/v8.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /** \mainpage V8 API Reference Guide
  *
  * V8 is Google's open source JavaScript engine.
  *
  * This set of documents provides reference material generated from the
  * V8 header file, include/v8.h.
@@ skipping 7549 matching lines @@
   friend class WeakCallbackInfo;
   template <class T> friend class Eternal;
   template <class T> friend class PersistentBase;
   template <class T, class M> friend class Persistent;
   friend class Context;
 };
 
 /**
  * Helper class to create a snapshot data blob.
  */
-class SnapshotCreator {
+class V8_EXPORT SnapshotCreator {
  public:
   enum class FunctionCodeHandling { kClear, kKeep };
 
   /**
    * Create and enter an isolate, and set it up for serialization.
    * The isolate is either created from scratch or from an existing snapshot.
    * The caller keeps ownership of the argument snapshot.
    * \param existing_blob existing snapshot from which to create this one.
    * \param external_references a null-terminated array of external references
    *        that must be equivalent to CreateParams::external_references.
@@ skipping 2111 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // INCLUDE_V8_H_