Browser Plugin: <webview> should inherit partition attribute of opener on attachment.

content/browser/browser_plugin/browser_plugin_guest.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.
 
 // A BrowserPluginGuest is the browser side of a browser <--> embedder
 // renderer channel. A BrowserPlugin (a WebPlugin) is on the embedder
 // renderer side of browser <--> embedder renderer communication.
 //
 // BrowserPluginGuest lives on the UI thread of the browser process. It has a
 // helper, BrowserPluginGuestHelper, which is a RenderViewHostObserver. The
@@ skipping 414 matching lines @@
   int next_permission_request_id_;
   // A map to store WebContents's media request object and callback.
   // We need to store these because we need a roundtrip to the embedder to know
   // if we allow or disallow the request. The key of the map is unique only for
   // a given BrowserPluginGuest.
   MediaStreamRequestsMap media_requests_map_;
   // A map from request ID to instance ID for use by the New Window API.
   typedef std::map<int, int> NewWindowRequestMap;
   NewWindowRequestMap new_window_request_map_;
 
+  std::string storage_partition_id_;
+  bool persist_storage_;
+
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginGuest);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_GUEST_H_