Temporary fix for CWS client redirect issue to undo a regression.

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 340f8a4bd6a1155acf9eccec38c6667b701d909e..5ed64646098fdc552511f8f9a1175749757e4a28 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -3150,6 +3150,13 @@ void WebContentsImpl::RequestTransferURL(
 
     // Navigations in Web UI pages count as browser-initiated navigations.
     params.is_renderer_initiated = false;
+
+    // TODO(creis): Remove this line.  In the short term, it fixes a regression
+    // (http://crbug.com/313572) by partially reverting r231370.
+    // The underlying problem is that WebDataSource::replacesCurrentHistoryItem
+    // should be returning false when the CWS goes to the sign-in page.
+    // See http://crbug.com/311721.
+    params.should_replace_current_entry = false;
   }
 
   new_contents = OpenURL(params);