[d8] Fix the shared-library build

src/snapshot/natives.h

Index: src/snapshot/natives.h
diff --git a/src/snapshot/natives.h b/src/snapshot/natives.h
index e44751537fab49b51d84507b3906279867205f8f..a9dc306a3d45b1a5fd0f43ab7e4bfa3d9610ea4f 100644
--- a/src/snapshot/natives.h
+++ b/src/snapshot/natives.h
@@ -22,8 +22,15 @@ enum NativeType {
   TEST
 };
 
+// Extra handling for V8_EXPORT_PRIVATE in combination with USING_V8_SHARED
+// since definition of methods of classes marked as dllimport is not allowed.
 template <NativeType type>
+#ifdef USING_V8_SHARED
 class NativesCollection {
+#else
+class V8_EXPORT_PRIVATE NativesCollection {
+#endif  // USING_V8_SHARED
+
  public:
   // The following methods are implemented in js2c-generated code: