Minor changes to allow Pepper InstancePrivate tests to pass with gin

ppapi/shared_impl/scoped_pp_var.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PPAPI_SHARED_IMPL_SCOPED_PP_VAR_H_
 #define PPAPI_SHARED_IMPL_SCOPED_PP_VAR_H_
 
 #include <stdlib.h>
 
 #include "base/macros.h"
@@ skipping 29 matching lines @@
   // Returns the PP_Var, passing the reference to the caller. This class
   // will no longer hold the var.
   PP_Var Release();
 
  private:
   PP_Var var_;
 };
 
 // An array of PP_Vars which will be deallocated and have their references
 // decremented when they go out of scope.
-class ScopedPPVarArray {
+class PPAPI_SHARED_EXPORT ScopedPPVarArray {
  public:
   struct PassPPBMemoryAllocatedArray {};
 
   // Assumes responsibility for one ref of each of the vars in the array as
   // well as the array memory allocated by PPB_Memory_Dev.
   // TODO(raymes): Add compatibility for arrays allocated with C++ "new".
   ScopedPPVarArray(const PassPPBMemoryAllocatedArray&,
                    PP_Var* array,
                    size_t size);
 
@@ skipping 15 matching lines @@
   // TODO(raymes): Consider supporting copy/assign.
   DISALLOW_COPY_AND_ASSIGN(ScopedPPVarArray);
 
   PP_Var* array_;
   size_t size_;
 };
 
 }  // namespace ppapi
 
 #endif  // PPAPI_SHARED_IMPL_SCOPED_PP_VAR_H_