Revert 152135 - Fix accessability for web notification tray.

ash/system/tray/system_tray.h

Index: ash/system/tray/system_tray.h
===================================================================
--- ash/system/tray/system_tray.h	(revision 152315)
+++ ash/system/tray/system_tray.h	(working copy)
@@ -156,7 +156,6 @@
   virtual void Initialize() OVERRIDE;
   virtual void SetShelfAlignment(ShelfAlignment alignment) OVERRIDE;
   virtual void AnchorUpdated() OVERRIDE;
-  virtual string16 GetAccessibleName() OVERRIDE;
 
  private:
   friend class internal::SystemTrayBubble;
@@ -193,6 +192,9 @@
   // Overridden from internal::ActionableView.
   virtual bool PerformAction(const ui::Event& event) OVERRIDE;
 
+  // Overridden from views::View.
+  virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
+
   // Owned items.
   ScopedVector<SystemTrayItem> items_;