Adds LINE_START and LINE_END to DockPanelParser in UiBinder

Internal contribution.
reviewed by: rjrjr

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@6333 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/user/src/com/google/gwt/uibinder/parsers/DockPanelParser.java b/user/src/com/google/gwt/uibinder/parsers/DockPanelParser.java
index 088aa00..3493cd9e 100644
--- a/user/src/com/google/gwt/uibinder/parsers/DockPanelParser.java
+++ b/user/src/com/google/gwt/uibinder/parsers/DockPanelParser.java
@@ -37,6 +37,8 @@
     values.put("EAST", "com.google.gwt.user.client.ui.DockPanel.EAST");
     values.put("WEST", "com.google.gwt.user.client.ui.DockPanel.WEST");
     values.put("CENTER", "com.google.gwt.user.client.ui.DockPanel.CENTER");
+    values.put("LINE_START", "com.google.gwt.user.client.ui.DockPanel.LINE_START");
+    values.put("LINE_END", "com.google.gwt.user.client.ui.DockPanel.LINE_END");
   }
 
   public void parse(XMLElement elem, String fieldName, JClassType type,