Make sure the default CSP is used for <webview> with PlzNavigate.

extensions/browser/url_request_util.h

 // Copyright 2014 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 EXTENSIONS_BROWSER_URL_REQUEST_UTIL_H_
 #define EXTENSIONS_BROWSER_URL_REQUEST_UTIL_H_
 
 #include <string>
 
 #include "ui/base/page_transition_types.h"
@@ skipping 14 matching lines @@
 // renderer A to access a resource in an extension running in renderer B.
 // Returns false when it couldn't determine if the resource is allowed or not
 bool AllowCrossRendererResourceLoad(net::URLRequest* request,
                                     bool is_incognito,
                                     const Extension* extension,
                                     InfoMap* extension_info_map,
                                     bool* allowed);
 
 // Returns true if |request| corresponds to a resource request from a
 // <webview>.
-bool IsWebViewRequest(const net::URLRequest* request);
+bool IsWebViewRequest(net::URLRequest* request);
 
 // Helper method that is called by both AllowCrossRendererResourceLoad and
 // ExtensionNavigationThrottle to share logic.
 // Sets allowed=true to allow a chrome-extension:// resource request coming from
 // renderer A to access a resource in an extension running in renderer B.
 // Returns false when it couldn't determine if the resource is allowed or not
 bool AllowCrossRendererResourceLoadHelper(bool is_guest,
                                           const Extension* extension,
                                           const Extension* owner_extension,
                                           const std::string& partition_id,
                                           const std::string& resource_path,
                                           ui::PageTransition page_transition,
                                           bool* allowed);
 
 }  // namespace url_request_util
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_URL_REQUEST_UTIL_H_