Messaging for channels in the editor (dartbug.com/6980).

editor/tools/plugins/com.google.dart.tools.deploy/src/com/google/dart/tools/ui/dialogs/AboutDartDialog.java

Index: editor/tools/plugins/com.google.dart.tools.deploy/src/com/google/dart/tools/ui/dialogs/AboutDartDialog.java
===================================================================
--- editor/tools/plugins/com.google.dart.tools.deploy/src/com/google/dart/tools/ui/dialogs/AboutDartDialog.java	(revision 30076)
+++ editor/tools/plugins/com.google.dart.tools.deploy/src/com/google/dart/tools/ui/dialogs/AboutDartDialog.java	(working copy)
@@ -57,6 +57,24 @@
 
   private static final String NEW_LINE = System.getProperty("line.separator");
 
+  private static String getChannelLabel() {
+    //TODO (pquitslund): move to UpdateUtils
+    String updateUrl = UpdateCore.getUpdateUrl();
+    if (updateUrl != null) {
+      if (updateUrl.contains("/channels/be/")) {
+        return " (BLEEDING EDGE)";
+      }
+      if (updateUrl.contains("/channels/dev/")) {
+        return " (DEV)";
+      }
+      if (updateUrl.contains("/channels/stable/")) {
+        return " (STABLE)";
+      }
+    }
+    //Fall through
+    return "";
+  }
+
   private final UpdateListener updateListener = new UpdateAdapter() {
     @Override
     public void installing() {
@@ -236,7 +254,7 @@
   }
 
   private String getVersion() {
-    return DartToolsPlugin.getVersionString();
+    return DartToolsPlugin.getVersionString() + getChannelLabel();
   }
 
   private Label newLabel(int style) {