mus: Send display-id to client only for the root windows.

components/mus/ws/window_tree_client_unittest.cc

 // Copyright 2014 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 <stddef.h>
 #include <stdint.h>
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 258 matching lines @@
     if (wait_state_.get() &&
         tracker_.changes()->size() >= wait_state_->change_count) {
       wait_state_->run_loop.Quit();
     }
   }
 
   // WindowTreeClient:
   void OnEmbed(ClientSpecificId client_id,
                WindowDataPtr root,
                mojom::WindowTreePtr tree,
+               int64_t display_id,
                Id focused_window_id,
                bool drawn) override {
     // TODO(sky): add coverage of |focused_window_id|.
     ASSERT_TRUE(root);
     root_window_id_ = root->window_id;
     tree_ = std::move(tree);
     client_id_ = client_id;
     tracker()->OnEmbed(client_id, std::move(root), drawn);
     if (embed_run_loop_)
       embed_run_loop_->Quit();
   }
   void OnEmbeddedAppDisconnected(Id window_id) override {
     tracker()->OnEmbeddedAppDisconnected(window_id);
   }
   void OnUnembed(Id window_id) override { tracker()->OnUnembed(window_id); }
   void OnLostCapture(Id window_id) override {
     tracker()->OnLostCapture(window_id);
   }
   void OnTopLevelCreated(uint32_t change_id,
                          mojom::WindowDataPtr data,
+                         int64_t display_id,
                          bool drawn) override {
     tracker()->OnTopLevelCreated(change_id, std::move(data), drawn);
   }
   void OnWindowBoundsChanged(Id window_id,
                              RectPtr old_bounds,
                              RectPtr new_bounds) override {
     // The bounds of the root may change during startup on Android at random
     // times. As this doesn't matter, and shouldn't impact test exepctations,
     // it is ignored.
     if (window_id == root_window_id_ && !track_root_bounds_changes_)
@@ skipping 1722 matching lines @@
 
 // TODO(sky): make sure coverage of what was
 // WindowManagerTest.SecondEmbedRoot_InitService and
 // WindowManagerTest.MultipleEmbedRootsBeforeWTHReady gets added to window
 // manager
 // tests.
 
 }  // namespace test
 }  // namespace ws
 }  // namespace mus