Allow non-radio button properties in uber tray. Simplified chinese will use it.

ash/shell.cc

Index: ash/shell.cc
diff --git a/ash/shell.cc b/ash/shell.cc
index 955f01246a8d89cf3dced4ca2f0e6cd683e158a8..a089f5541b8a9cbf083da656d2559ef9db0bf918 100644
--- a/ash/shell.cc
+++ b/ash/shell.cc
@@ -377,7 +377,8 @@ class DummySystemTrayDelegate : public SystemTrayDelegate {
   virtual void SwitchIME(const std::string& ime_id) OVERRIDE {
   }
 
-  virtual void ActivateIMEProperty(const std::string& key) OVERRIDE {
+  virtual void ActivateIMEProperty(const std::string& key,
+                                   bool is_selection) OVERRIDE {
   }
 
   virtual void GetMostRelevantNetworkIcon(NetworkIconInfo* info,