chromeos: fix focus for mushrome

ui/aura/test/mus/test_window_tree_client_setup.cc

Index: ui/aura/test/mus/test_window_tree_client_setup.cc
diff --git a/ui/aura/test/mus/test_window_tree_client_setup.cc b/ui/aura/test/mus/test_window_tree_client_setup.cc
index e5f62ed3b97f3bc7bbc1f4bef59cd61adf26fd33..65941b2714d8e99a65dcdf56f37d6a291da95b61 100644
--- a/ui/aura/test/mus/test_window_tree_client_setup.cc
+++ b/ui/aura/test/mus/test_window_tree_client_setup.cc
@@ -6,6 +6,7 @@
 
 #include "base/memory/ptr_util.h"
 #include "ui/aura/mus/window_tree_client.h"
+#include "ui/aura/test/mus/test_window_manager_client.h"
 #include "ui/aura/test/mus/test_window_tree.h"
 #include "ui/aura/test/mus/window_tree_client_private.h"
 #include "ui/display/display.h"
@@ -26,9 +27,11 @@ void TestWindowTreeClientSetup::Init(
 void TestWindowTreeClientSetup::InitForWindowManager(
     WindowTreeClientDelegate* window_tree_delegate,
     WindowManagerDelegate* window_manager_delegate) {
+  test_window_manager_client_ = base::MakeUnique<TestWindowManagerClient>();
   CommonInit(window_tree_delegate, window_manager_delegate);
-  WindowTreeClientPrivate(window_tree_client_.get())
-      .SetTreeAndClientId(window_tree_.get(), 1);
+  WindowTreeClientPrivate wtc_private(window_tree_client_.get());

[msw, 2017/04/26 23:01:09]

optional nit: avoid acronyms

[sky, 2017/04/26 23:30:28]

Ya, I thought the name was rather long and went with the acronym. But you're
right, we typically don't do that.

+  wtc_private.SetTreeAndClientId(window_tree_.get(), 1);
+  wtc_private.SetWindowManagerClient(test_window_manager_client_.get());
 }
 
 std::unique_ptr<WindowTreeClient>