PlzNavigate: Show error pages when the navigation failed before commit

content/browser/loader/navigation_url_loader_unittest.cc

 // 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.
 
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/run_loop.h"
 #include "content/browser/frame_host/navigation_request_info.h"
@@ skipping 96 matching lines @@
   }
 
   void OnResponseStarted(const scoped_refptr<ResourceResponse>& response,
                          scoped_ptr<StreamHandle> body) override {
     response_ = response;
     body_ = body.Pass();
     ASSERT_TRUE(response_started_);
     response_started_->Quit();
   }
 
-  void OnRequestFailed(int net_error) override {
+  void OnRequestFailed(bool in_cache, int net_error) override {
     net_error_ = net_error;
     ASSERT_TRUE(request_failed_);
     request_failed_->Quit();
   }
 
   void OnRequestStarted(base::TimeTicks timestamp) override {
     ASSERT_FALSE(timestamp.is_null());
     ++on_request_handled_counter_;
   }
 
@@ skipping 265 matching lines @@
 
   // Release the body.
   delegate.ReleaseBody();
   base::RunLoop().RunUntilIdle();
 
   // Verify that URLRequestTestJob no longer has anything paused.
   EXPECT_FALSE(net::URLRequestTestJob::ProcessOnePendingMessage());
 }
 
 }  // namespace content