Tab dragging as implemented as a mus API.

components/mus/ws/window_manager_client_unittest.cc

Index: components/mus/ws/window_manager_client_unittest.cc
diff --git a/components/mus/ws/window_manager_client_unittest.cc b/components/mus/ws/window_manager_client_unittest.cc
index a8049c6b69bcf72b5676873629f747c454ffc038..b7d87c8bd54ffa0ce4fe2cfe8cbc56db262d6e3f 100644
--- a/components/mus/ws/window_manager_client_unittest.cc
+++ b/components/mus/ws/window_manager_client_unittest.cc
@@ -63,6 +63,12 @@ class TestWindowManagerDelegate : public WindowManagerDelegate {
   void OnWmNewDisplay(Window* window,
                       const display::Display& display) override {}
   void OnAccelerator(uint32_t id, const ui::Event& event) override {}
+  void OnWmPerformMoveLoop(::mus::Window* window,
+                           ::mus::mojom::MoveLoopSource source,
+                           const gfx::Point& cursor_location,
+                           const base::Callback<void(bool)>& on_done) override {
+  }
+  void OnWmCancelMoveLoop(::mus::Window* window) override {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TestWindowManagerDelegate);