Fix NetErrorTabHelper with PlzNavigate.

content/public/browser/navigation_handle.h

 // Copyright 2015 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 CONTENT_PUBLIC_BROWSER_NAVIGATION_HANDLE_H_
 #define CONTENT_PUBLIC_BROWSER_NAVIGATION_HANDLE_H_
 
 #include <memory>
 
 #include "content/common/content_export.h"
@@ skipping 134 matching lines @@
   // Whether the navigation has encountered a server redirect or not.
   virtual bool WasServerRedirect() = 0;
 
   // Whether the navigation has committed. This returns true for either
   // successful commits or error pages that replace the previous page
   // (distinguished by |IsErrorPage|), and false for errors that leave the user
   // on the previous page.
   virtual bool HasCommitted() = 0;
 
   // Whether the navigation resulted in an error page.
+  // Note that if an error page reloads, this will return true even though
+  // GetNetErrorCode will be net::OK.
   virtual bool IsErrorPage() = 0;
 
   // Returns the response headers for the request or nullptr if there are none.
   // This should only be accessed after a redirect was encountered or after the
   // navigation is ready to commit. The headers returned should not be modified,
   // as modifications will not be reflected in the network stack.
   virtual const net::HttpResponseHeaders* GetResponseHeaders() = 0;
 
   // Resumes a navigation that was previously deferred by a NavigationThrottle.
   virtual void Resume() = 0;
 
   // Cancels a navigation that was previously deferred by a NavigationThrottle.
   // |result| should be equal to NavigationThrottle::CANCEL or
   // NavigationThrottle::CANCEL_AND_IGNORE.
   virtual void CancelDeferredNavigation(
       NavigationThrottle::ThrottleCheckResult result) = 0;
 
   // Testing methods ----------------------------------------------------------
   //
   // The following methods should be used exclusively for writing unit tests.
 
   static std::unique_ptr<NavigationHandle> CreateNavigationHandleForTesting(
       const GURL& url,
-      RenderFrameHost* render_frame_host);
+      RenderFrameHost* render_frame_host,
+      bool committed = false,
+      net::Error error = net::OK);
 
   // Registers a NavigationThrottle for tests. The throttle can
   // modify the request, pause the request or cancel the request. This will
   // take ownership of the NavigationThrottle.
   // Note: in non-test cases, NavigationThrottles should not be added directly
   // but returned by the implementation of
   // ContentBrowserClient::CreateThrottlesForNavigation. This ensures proper
   // ordering of the throttles.
   virtual void RegisterThrottleForTesting(
       std::unique_ptr<NavigationThrottle> navigation_throttle) = 0;
@@ skipping 24 matching lines @@
 
   // The NavigationData that the embedder returned from
   // ResourceDispatcherHostDelegate::GetNavigationData during commit. This will
   // be a clone of the NavigationData.
   virtual NavigationData* GetNavigationData() = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_NAVIGATION_HANDLE_H_