Fix incorrect creation of duplicate navigation entries for repeated page load failures.

content/browser/frame_host/navigator_impl.cc

 // Copyright 2013 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 "content/browser/frame_host/navigator_impl.h"
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/time/time.h"
 #include "content/browser/frame_host/frame_tree.h"
@@ skipping 209 matching lines @@
   // edit the URL and try again.  This may be useful in cases that the committed
   // page cannot be attacker-controlled.  In these cases, we still allow the
   // view to clear the pending entry and typed URL if the user requests
   // (e.g., hitting Escape with focus in the address bar).
   //
   // Note: don't touch the transient entry, since an interstitial may exist.
   bool should_preserve_entry = controller_->IsUnmodifiedBlankTab() ||
       delegate_->ShouldPreserveAbortedURLs();
   if (controller_->GetPendingEntry() != controller_->GetVisibleEntry() ||
       !should_preserve_entry) {
-    controller_->DiscardPendingEntry();
+    controller_->DiscardPendingEntry(true);
 
     // Also force the UI to refresh.
     controller_->delegate()->NotifyNavigationStateChanged(INVALIDATE_TYPE_URL);
   }
 
   if (delegate_)
     delegate_->DidFailProvisionalLoadWithError(render_frame_host, params);
 }
 
 void NavigatorImpl::DidFailLoadWithError(
@@ skipping 650 matching lines @@
         "Navigation.TimeToCommit_ExistingRenderer_BeforeUnloadDiscounted",
         time_to_commit);
     UMA_HISTOGRAM_TIMES(
         "Navigation.TimeToURLJobStart_ExistingRenderer_BeforeUnloadDiscounted",
         time_to_network);
   }
   navigation_data_.reset();
 }
 
 }  // namespace content