Remove DCHECK that crashes.

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 <algorithm>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 1808 matching lines @@
   }
 
   // While a JS message dialog is showing, tabs in the same process shouldn't
   // process input events.
   GetProcess()->SetIgnoreInputEvents(true);
   delegate_->RunJavaScriptDialog(this, message, default_prompt, frame_url,
                                  dialog_type, reply_msg);
 }
 
 void RenderFrameHostImpl::OnRunBeforeUnloadConfirm(
-    const GURL& frame_url,
     bool is_reload,
     IPC::Message* reply_msg) {
   TRACE_EVENT1("navigation", "RenderFrameHostImpl::OnRunBeforeUnloadConfirm",
                "frame_tree_node", frame_tree_node_->frame_tree_node_id());
 
-  // TODO(nasko): It is strange to accept the frame URL as a parameter from
-  // the renderer. Investigate and remove parameter, but for now let's
-  // double check.
-  DCHECK_EQ(frame_url, last_committed_url_);
-
   // While a JS beforeunload dialog is showing, tabs in the same process
   // shouldn't process input events.
   GetProcess()->SetIgnoreInputEvents(true);
 
   // The beforeunload dialog for this frame may have been triggered by a
   // browser-side request to this frame or a frame up in the frame hierarchy.
   // Stop any timers that are waiting.
   for (RenderFrameHostImpl* frame = this; frame; frame = frame->GetParent()) {
     if (frame->beforeunload_timeout_)
       frame->beforeunload_timeout_->Stop();
@@ skipping 2051 matching lines @@
 }
 
 void RenderFrameHostImpl::ForwardGetInterfaceToRenderFrame(
     const std::string& interface_name,
     mojo::ScopedMessagePipeHandle pipe) {
   GetRemoteInterfaces()->GetInterface(interface_name, std::move(pipe));
 }
 #endif
 
 }  // namespace content