aura-mus: Destroy the capture client before the tree client in TestWM.

services/ui/test_wm/test_wm.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <memory>
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "mojo/public/cpp/bindings/binding.h"
@@ skipping 21 matching lines @@
 namespace ui {
 namespace test {
 
 class TestWM : public service_manager::Service,
                public aura::WindowTreeClientDelegate,
                public aura::WindowManagerDelegate {
  public:
   TestWM() {}
 
   ~TestWM() override {
+    default_capture_client_.reset();
+
     // WindowTreeHost uses state from WindowTreeClient, so destroy it first.
     window_tree_host_.reset();
 
     // WindowTreeClient destruction may callback to us.
     window_tree_client_.reset();
 
     display::Screen::SetScreenInstance(nullptr);
   }
 
  private:
@@ skipping 88 matching lines @@
     ui::mojom::FrameDecorationValuesPtr frame_decoration_values =
         ui::mojom::FrameDecorationValues::New();
     frame_decoration_values->max_title_bar_button_width = 0;
     window_manager_client_->SetFrameDecorationValues(
         std::move(frame_decoration_values));
     aura::client::SetFocusClient(root_, &focus_client_);
   }
   void OnWmDisplayRemoved(aura::WindowTreeHostMus* window_tree_host) override {
     DCHECK_EQ(window_tree_host, window_tree_host_.get());
     root_ = nullptr;
+    default_capture_client_.reset();
     window_tree_host_.reset();
   }
   void OnWmDisplayModified(const display::Display& display) override {}
   void OnWmPerformMoveLoop(aura::Window* window,
                            mojom::MoveLoopSource source,
                            const gfx::Point& cursor_location,
                            const base::Callback<void(bool)>& on_done) override {
     // Don't care.
   }
   void OnWmCancelMoveLoop(aura::Window* window) override {}
@@ skipping 26 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(TestWM);
 };
 
 }  // namespace test
 }  // namespace ui
 
 MojoResult ServiceMain(MojoHandle service_request_handle) {
   service_manager::ServiceRunner runner(new ui::test::TestWM);
   return runner.Run(service_request_handle);
 }