Add checks to understand crash in NavigationHandle::DidCommitNavigation

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 a6e002acc8ee2c2af88a7be8ff6f2e36f50c9960..e525116f89e62ec6cdfba36c24183f0af85b978f 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -1049,6 +1049,10 @@ void RenderFrameHostImpl::OnDidCommitProvisionalLoad(const IPC::Message& msg) {
     }
   }
 
+  // TODO(clamy): Remove this when enough info has been gathered for
+  // crbug.com/589365.
+  CHECK_EQ(navigation_handle_->GetURL(), validated_params.url);
+
   accessibility_reset_count_ = 0;
   frame_tree_node()->navigator()->DidNavigate(this, validated_params);