Make MSVS happy with ExternalAsciiStringResourceImpl

include/v8.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2434 matching lines @@
   static Local<TypeSwitch> New(Handle<FunctionTemplate> type);
   static Local<TypeSwitch> New(int argc, Handle<FunctionTemplate> types[]);
   int match(Handle<Value> value);
  private:
   TypeSwitch();
 };
 
 
 // --- Extensions ---
 
-class ExternalAsciiStringResourceImpl
+class V8EXPORT ExternalAsciiStringResourceImpl
     : public String::ExternalAsciiStringResource {
  public:
   ExternalAsciiStringResourceImpl() : data_(0), length_(0) {}
   ExternalAsciiStringResourceImpl(const char* data, size_t length)
       : data_(data), length_(length) {}
   const char* data() const { return data_; }
   size_t length() const { return length_; }
 
  private:
   const char* data_;
@@ skipping 1755 matching lines @@
 
 
 }  // namespace v8
 
 
 #undef V8EXPORT
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_