[NoStatePrefetch] Do not send responses to renderer in prefetch mode.

third_party/WebKit/public/web/WebDocument.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 92 matching lines @@
     BLINK_EXPORT WebElement head();
     BLINK_EXPORT WebString title() const;
     BLINK_EXPORT WebString contentAsTextForTesting() const;
     BLINK_EXPORT WebElementCollection all();
     BLINK_EXPORT void forms(WebVector<WebFormElement>&) const;
     BLINK_EXPORT WebURL completeURL(const WebString&) const;
     BLINK_EXPORT WebElement getElementById(const WebString&) const;
     BLINK_EXPORT WebElement focusedElement() const;
     BLINK_EXPORT WebReferrerPolicy referrerPolicy() const;
     BLINK_EXPORT WebString outgoingReferrer();
+    BLINK_EXPORT bool isPrefetchOnly() const;
 
     // Accessibility support. These methods should only be called on the
     // top-level document, because one accessibility cache spans all of
     // the documents on the page.
 
     // Gets the accessibility object for this document.
     BLINK_EXPORT WebAXObject accessibilityObject() const;
 
     // Gets the accessibility object for an object on this page by ID.
     BLINK_EXPORT WebAXObject accessibilityObjectFromID(int axID) const;
@@ skipping 22 matching lines @@
     BLINK_EXPORT WebDocument& operator=(Document*);
     BLINK_EXPORT operator Document*() const;
 #endif
 };
 
 DECLARE_WEB_NODE_TYPE_CASTS(WebDocument);
 
 } // namespace blink
 
 #endif