Use ui::Event instead of mojom::EventPtr in mash/wm.

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 31c5a11835ad060f9992340e48b078bec9f8b625..a064f076dd2df4843ba35f378b9cba4fc6369835 100644
--- a/components/mus/ws/window_manager_client_unittest.cc
+++ b/components/mus/ws/window_manager_client_unittest.cc
@@ -49,7 +49,7 @@ class TestWindowManagerDelegate : public WindowManagerDelegate {
       std::map<std::string, std::vector<uint8_t>>* properties) override {
     return nullptr;
   }
-  void OnAccelerator(uint32_t id, mojom::EventPtr event) override {}
+  void OnAccelerator(uint32_t id, const ui::Event& event) override {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TestWindowManagerDelegate);