Reinitialize WindowProxy on navigations.

third_party/WebKit/Source/bindings/core/v8/LocalWindowProxy.h

Index: third_party/WebKit/Source/bindings/core/v8/LocalWindowProxy.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/LocalWindowProxy.h b/third_party/WebKit/Source/bindings/core/v8/LocalWindowProxy.h
index c6b8cd6a5f5d94df36aeb3bb6a3fb2cfa29d4432..a9b68c9deedb6c1421348c4e0ed48d40c37ff16c 100644
--- a/third_party/WebKit/Source/bindings/core/v8/LocalWindowProxy.h
+++ b/third_party/WebKit/Source/bindings/core/v8/LocalWindowProxy.h
@@ -85,6 +85,12 @@ class LocalWindowProxy final : public WindowProxy {
 
   void setSecurityToken(SecurityOrigin*);
 
+  // Triggers updates of objects that are associated with a Document:
+  // - the activity logger
+  // - the document DOM wrapper
+  // - the security origin
+  void updateDocumentInternal();
+
   // The JavaScript wrapper for the document object is cached on the global
   // object for fast access. UpdateDocumentProperty sets the wrapper
   // for the current document on the global object.