Pulling in operator=() to ScopedComPtr.

base/scoped_comptr_win.h

 // Copyright (c) 2006-2008 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 BASE_SCOPED_COMPTR_WIN_H_
 #define BASE_SCOPED_COMPTR_WIN_H_
 
 #include <unknwn.h>
 
 #include "base/logging.h"
@@ skipping 120 matching lines @@
   //    ... later the destructor runs, which will Release() again.
   // and to get the benefit of the DCHECKs we add to QueryInterface.
   // There's still a way to call these methods if you absolutely must
   // by statically casting the ScopedComPtr instance to the wrapped interface
   // and then making the call... but generally that shouldn't be necessary.
   BlockIUnknownMethods<Interface>* operator->() const {
     DCHECK(ptr_ != NULL);
     return reinterpret_cast<BlockIUnknownMethods<Interface>*>(ptr_);
   }
 
+  // Pull in operator=() from the parent class.
+  using scoped_refptr<Interface>::operator=;
+
   // static methods
 
   static const IID& iid() {
     return *interface_id;
   }
 };
 
 #endif  // BASE_SCOPED_COMPTR_WIN_H_