Removal of drag window to user tray icon functionality

ash/system/user/tray_user.h

Index: ash/system/user/tray_user.h
diff --git a/ash/system/user/tray_user.h b/ash/system/user/tray_user.h
index 079bf75e4f79edefa8a933ea125766673deafb5f..cd9963ae4450790b8dd9f38aec83b2febc35956a 100644
--- a/ash/system/user/tray_user.h
+++ b/ash/system/user/tray_user.h
@@ -49,14 +49,6 @@ class ASH_EXPORT TrayUser : public SystemTrayItem,
   };
   TestState GetStateForTest() const;
 
-  // Checks if a drag and drop operation would be able to land a window on this
-  // |point_in_screen|.
-  bool CanDropWindowHereToTransferToUser(const gfx::Point& point_in_screen);
-
-  // Try to re-parent the |window| to a new owner. Returns true if the window
-  // got transfered.
-  bool TransferWindowToUser(aura::Window* window);
-
   // Returns the bounds of the user panel in screen coordinates.
   // Note: This only works when the panel shown.
   gfx::Rect GetUserPanelBoundsInScreenForTest() const;
@@ -82,9 +74,6 @@ class ASH_EXPORT TrayUser : public SystemTrayItem,
   // Get the user index which should be used for the tray icon of this item.
   MultiProfileIndex GetTrayIndex();
 
-  // Return the radius for the tray item to use.
-  int GetTrayItemRadius();
-
   // Updates the layout of this item.
   void UpdateLayoutOfItem();