Use the existing PatchLink.SideBySide class to build patch links

I shouldn't have generated the link by hand, instead this should
have used the existing side by side link generator that we already
use in the PatchSetPanel.

Signed-off-by: Shawn O. Pearce <sop@google.com>

appjar/src/main/java/com/google/gerrit/client/changes/PublishCommentScreen.java

@@ -27,13 +27,13 @@ import com.google.gerrit.client.reviewdb.PatchSet;
 import com.google.gerrit.client.rpc.Common;
 import com.google.gerrit.client.rpc.GerritCallback;
 import com.google.gerrit.client.ui.AccountScreen;
+import com.google.gerrit.client.ui.PatchLink;
 import com.google.gwt.user.client.DOM;
 import com.google.gwt.user.client.Element;
 import com.google.gwt.user.client.ui.Button;
 import com.google.gwt.user.client.ui.ClickListener;
 import com.google.gwt.user.client.ui.FlowPanel;
 import com.google.gwt.user.client.ui.FormPanel;
-import com.google.gwt.user.client.ui.Hyperlink;
 import com.google.gwt.user.client.ui.Label;
 import com.google.gwt.user.client.ui.Panel;
 import com.google.gwt.user.client.ui.RadioButton;
@@ -207,11 +207,7 @@ public class PublishCommentScreen extends AccountScreen {
           panel.addStyleName("gerrit-PatchComments");
           draftsPanel.add(panel);
 
-          final Hyperlink link =
+          panel.add(new PatchLink.SideBySide(fn, c.getKey().getParentKey()));
-              new Hyperlink(fn, Link.toPatchSideBySide(c.getKey()
-                  .getParentKey()));
-          link.addStyleName("gerrit-PatchLink");
-          panel.add(link);
           priorFile = fn;
         }
 

appjar/src/main/java/com/google/gerrit/public/Gerrit.css

@@ -671,7 +671,7 @@
   margin-bottom: 10px;
   margin-left: 10px;
 }
-.gerrit-PublishCommentsScreen .gerrit-PatchLink {
+.gerrit-PublishCommentsScreen .gwt-Hyperlink {
   white-space: nowrap;
   font-size: small;
 }