Eliminate WindowTreeConnection

components/mus/public/cpp/window_tree_host_factory.h

Index: components/mus/public/cpp/window_tree_host_factory.h
diff --git a/components/mus/public/cpp/window_tree_host_factory.h b/components/mus/public/cpp/window_tree_host_factory.h
index 5090db32c6462a6a7bc9a98619edc2586013d12c..75661af89d6ad1bed02f19eba648883ffa68a1a0 100644
--- a/components/mus/public/cpp/window_tree_host_factory.h
+++ b/components/mus/public/cpp/window_tree_host_factory.h
@@ -18,17 +18,17 @@ class Connector;
 namespace mus {
 
 class WindowManagerDelegate;
-class WindowTreeDelegate;
+class WindowTreeClientDelegate;
 
 // The following create a new window tree host. Supply a |factory| if you have
 // already connected to mus, otherwise supply |shell|, which contacts mus and
 // obtains a WindowTreeHostFactory.
 void CreateWindowTreeHost(mojom::WindowTreeHostFactory* factory,
-                          WindowTreeDelegate* delegate,
+                          WindowTreeClientDelegate* delegate,
                           mojom::WindowTreeHostPtr* host,
                           WindowManagerDelegate* window_manager_delegate);
 void CreateWindowTreeHost(shell::Connector* connector,
-                          WindowTreeDelegate* delegate,
+                          WindowTreeClientDelegate* delegate,
                           mojom::WindowTreeHostPtr* host,
                           WindowManagerDelegate* window_manager_delegate);