Workaround for reading bad PageState from session history.

content/browser/frame_host/render_frame_host_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/render_frame_host_impl.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 954 matching lines @@
 void RenderFrameHostImpl::OnOpenURL(const FrameHostMsg_OpenURL_Params& params) {
   if (params.is_history_navigation_in_new_child) {
     DCHECK(SiteIsolationPolicy::UseSubframeNavigationEntries());
 
     // Try to find a FrameNavigationEntry that matches this frame instead, based
     // on the frame's unique name.  If this can't be found, fall back to the
     // default params using OpenURL below.
     if (frame_tree_node_->navigator()->NavigateNewChildFrame(
             this, params.frame_unique_name))
       return;
+
+    // No need to explicitly load about:blank, since we start there anyway.
+    if (params.url == GURL(url::kAboutBlankURL)) {
+      // TODO(creis): Do we need to stop loading in the frame?
+      DLOG(INFO) << "Skipping OpenURL for fallback to about:blank";
+      return;
+    }
   }
 
   OpenURL(params, GetSiteInstance());
 }
 
 void RenderFrameHostImpl::OnCancelInitialHistoryLoad() {
   // A Javascript navigation interrupted the initial history load.  Check if an
   // initial subframe cross-process navigation needs to be canceled as a result.
   // TODO(creis, clamy): Cancel any cross-process navigation in PlzNavigate.
   if (GetParent() && !frame_tree_node_->has_committed_real_load() &&
@@ skipping 2061 matching lines @@
   web_bluetooth_service_->SetClientConnectionErrorHandler(base::Bind(
       &RenderFrameHostImpl::DeleteWebBluetoothService, base::Unretained(this)));
   return web_bluetooth_service_.get();
 }
 
 void RenderFrameHostImpl::DeleteWebBluetoothService() {
   web_bluetooth_service_.reset();
 }
 
 }  // namespace content