Generalize Previews Type code

components/previews/core/previews_decider.h

Index: components/previews/core/previews_decider.h
diff --git a/components/previews/core/previews_decider.h b/components/previews/core/previews_decider.h
index 2df561611e98eb9c859cbb27ad1cd26b31d24c0e..f293c87c1ad0f621e85cf0756f6872cf0c2f6c60 100644
--- a/components/previews/core/previews_decider.h
+++ b/components/previews/core/previews_decider.h
@@ -1,18 +1,18 @@
 // Copyright 2016 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 COMPONENTS_PREVIEWS_CORE_PREVIEWS_DECIDER_H_
 #define COMPONENTS_PREVIEWS_CORE_PREVIEWS_DECIDER_H_
 
-#include "components/previews/core/previews_opt_out_store.h"
+#include "components/previews/core/previews_experiments.h"
 
 namespace net {
 class URLRequest;
 }
 
 namespace previews {
 
 class PreviewsDecider {
  public:
   // Whether |request| is allowed to show a preview of |type|.