WIP - allow scoped_refptr to be used without full defn of T

base/win/scoped_comptr.h

Index: base/win/scoped_comptr.h
diff --git a/base/win/scoped_comptr.h b/base/win/scoped_comptr.h
index 5ce60e2b688f603b2b681e42a270e41e6156f704..57c8d836f02c9750103f5814e3fbad225cf90f8a 100644
--- a/base/win/scoped_comptr.h
+++ b/base/win/scoped_comptr.h
@@ -54,7 +54,8 @@ class ScopedComPtr : public scoped_refptr<Interface> {
   // be confused with e.g. scoped_ptr::release().
   void Release() {
     if (this->ptr_ != NULL) {
-      this->ptr_->Release();
+      //FIXME: need to null |ref_| in this class as well.
+      this->ref_->Release();
       this->ptr_ = NULL;
     }
   }