Remove DCHECK that crashes.

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index 15283cb405f4729ad809960ddc183ff5da2961cf..cd8757c1aecdf38d8abdec90b230c506a6de10e1 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -1826,17 +1826,11 @@ void RenderFrameHostImpl::OnRunJavaScriptDialog(
 }
 
 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);