Remove DCHECK that crashes.

content/renderer/render_frame_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/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 4261 matching lines @@
 bool RenderFrameImpl::RunModalBeforeUnloadDialog(bool is_reload) {
   // Don't allow further dialogs if we are waiting to swap out, since the
   // ScopedPageLoadDeferrer in our stack prevents it.
   if (suppress_further_dialogs_)
     return false;
 
   bool success = false;
   // This is an ignored return value, but is included so we can accept the same
   // response as RunJavaScriptDialog.
   base::string16 ignored_result;
-  Send(new FrameHostMsg_RunBeforeUnloadConfirm(
-      routing_id_, frame_->GetDocument().Url(), is_reload, &success,
-      &ignored_result));
+  Send(new FrameHostMsg_RunBeforeUnloadConfirm(routing_id_, is_reload, &success,
+                                               &ignored_result));
   return success;
 }
 
 bool RenderFrameImpl::RunFileChooser(
     const blink::WebFileChooserParams& params,
     blink::WebFileChooserCompletion* chooser_completion) {
   FileChooserParams ipc_params;
   if (params.directory)
     ipc_params.mode = FileChooserParams::UploadFolder;
   else if (params.multi_select)
@@ skipping 2801 matching lines @@
       policy(info.default_policy),
       replaces_current_history_item(info.replaces_current_history_item),
       history_navigation_in_new_child_frame(
           info.is_history_navigation_in_new_child_frame),
       client_redirect(info.is_client_redirect),
       cache_disabled(info.is_cache_disabled),
       form(info.form),
       source_location(info.source_location) {}
 
 }  // namespace content