Fix cross-renderer resource loads for <webview> with PlzNavigate.

extensions/browser/url_request_util.h

Index: extensions/browser/url_request_util.h
diff --git a/extensions/browser/url_request_util.h b/extensions/browser/url_request_util.h
index afa0edb5a8664686eead9af126a384e4d73464f2..e39fd87de3006289725c7ba5b21c257585d4a25c 100644
--- a/extensions/browser/url_request_util.h
+++ b/extensions/browser/url_request_util.h
@@ -5,6 +5,10 @@
 #ifndef EXTENSIONS_BROWSER_URL_REQUEST_UTIL_H_
 #define EXTENSIONS_BROWSER_URL_REQUEST_UTIL_H_
 
+#include <string>
+
+#include "ui/base/page_transition_types.h"
+
 namespace net {
 class URLRequest;
 }
@@ -30,6 +34,19 @@ bool AllowCrossRendererResourceLoad(net::URLRequest* request,
 // <webview>.
 bool IsWebViewRequest(const 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