Delete WindowManagerWindowTreeFactorySetTestApi.

services/ui/ws/window_manager_window_tree_factory_set.h

Index: services/ui/ws/window_manager_window_tree_factory_set.h
diff --git a/services/ui/ws/window_manager_window_tree_factory_set.h b/services/ui/ws/window_manager_window_tree_factory_set.h
index 0c28c2735402dd8d327182b3e7b35bdb8d82d2ba..b20c3bcdffcc965fe617037591c0eb742cc5a748 100644
--- a/services/ui/ws/window_manager_window_tree_factory_set.h
+++ b/services/ui/ws/window_manager_window_tree_factory_set.h
@@ -25,10 +25,6 @@ class WindowManagerWindowTreeFactorySetObserver;
 class WindowServer;
 class WindowTree;
 
-namespace test {
-class WindowManagerWindowTreeFactorySetTestApi;
-}
-
 // WindowManagerWindowTreeFactorySet tracks the set of registered
 // WindowManagerWindowTreeHostFactories.
 class WindowManagerWindowTreeFactorySet : public UserIdTrackerObserver {
@@ -65,7 +61,6 @@ class WindowManagerWindowTreeFactorySet : public UserIdTrackerObserver {
 
  private:
   friend class WindowManagerWindowTreeFactory;
-  friend class test::WindowManagerWindowTreeFactorySetTestApi;
 
   // Called by WindowManagerWindowTreeFactory when CreateWindowTree() has
   // been called.