aura-mus: Hook up PerformWindowMove().

ui/aura/mus/window_tree_client.cc

Index: ui/aura/mus/window_tree_client.cc
diff --git a/ui/aura/mus/window_tree_client.cc b/ui/aura/mus/window_tree_client.cc
index 2c22cb46b6e0bbb51164e6501d08c7bc71d076ce..8c530e1fde361d8f9778ac6b8014320126798507 100644
--- a/ui/aura/mus/window_tree_client.cc
+++ b/ui/aura/mus/window_tree_client.cc
@@ -809,26 +809,6 @@ void WindowTreeClient::StopPointerWatcher() {
   has_pointer_watcher_ = false;
 }
 
-void WindowTreeClient::PerformWindowMove(
-    Window* window,
-    ui::mojom::MoveLoopSource source,
-    const gfx::Point& cursor_location,
-    const base::Callback<void(bool)>& callback) {
-  DCHECK(on_current_move_finished_.is_null());
-  on_current_move_finished_ = callback;
-
-  WindowMus* window_mus = WindowMus::Get(window);
-  current_move_loop_change_ = ScheduleInFlightChange(
-      base::MakeUnique<InFlightDragChange>(window_mus, ChangeType::MOVE_LOOP));
-  // Tell the window manager to take over moving us.
-  tree_->PerformWindowMove(current_move_loop_change_, window_mus->server_id(),
-                           source, cursor_location);
-}
-
-void WindowTreeClient::CancelWindowMove(Window* window) {
-  tree_->CancelWindowMove(WindowMus::Get(window)->server_id());
-}
-
 void WindowTreeClient::AddObserver(WindowTreeClientObserver* observer) {
   observers_.AddObserver(observer);
 }
@@ -1710,6 +1690,28 @@ void WindowTreeClient::OnWindowTreeHostStackAtTop(
   tree_->StackAtTop(change_id, window->server_id());
 }
 
+void WindowTreeClient::OnWindowTreeHostPerformWindowMove(
+    WindowTreeHostMus* window_tree_host,
+    ui::mojom::MoveLoopSource source,
+    const gfx::Point& cursor_location,
+    const base::Callback<void(bool)>& callback) {
+  DCHECK(on_current_move_finished_.is_null());
+  on_current_move_finished_ = callback;
+
+  WindowMus* window_mus = WindowMus::Get(window_tree_host->window());
+  current_move_loop_change_ = ScheduleInFlightChange(
+      base::MakeUnique<InFlightDragChange>(window_mus, ChangeType::MOVE_LOOP));
+  // Tell the window manager to take over moving us.
+  tree_->PerformWindowMove(current_move_loop_change_, window_mus->server_id(),
+                           source, cursor_location);
+}
+
+void WindowTreeClient::OnWindowTreeHostCancelWindowMove(
+    WindowTreeHostMus* window_tree_host) {
+  tree_->CancelWindowMove(
+      WindowMus::Get(window_tree_host->window())->server_id());
+}
+
 std::unique_ptr<WindowPortMus> WindowTreeClient::CreateWindowPortForTopLevel(
     const std::map<std::string, std::vector<uint8_t>>* properties) {
   std::unique_ptr<WindowPortMus> window_port =