Don't leave aborted URLs in the omnibox unless we're on a new tab.

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 0cc4374543015572b58996ebc14436a0d4edcb29..e0960681c1d660697774e4ce3a287bc377bfac3a 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -2345,6 +2345,10 @@ void WebContentsImpl::RequestOpenURL(RenderFrameHostImpl* render_frame_host,
   }
 }
 
+bool WebContentsImpl::ShouldPreserveAbortedURLs() {
+  return delegate_->ShouldPreserveAbortedURLs(this);
+}
+
 void WebContentsImpl::DidRedirectProvisionalLoad(
     RenderFrameHostImpl* render_frame_host,
     const GURL& validated_target_url) {