Adds couple of functions to WindowManagerDelegate:

ui/aura/test/aura_test_base.cc

Index: ui/aura/test/aura_test_base.cc
diff --git a/ui/aura/test/aura_test_base.cc b/ui/aura/test/aura_test_base.cc
index ca5d93f9c5009697d696d00e885354728a339cb9..1047665a928a40010917f6b6ecd2142acd8d5655 100644
--- a/ui/aura/test/aura_test_base.cc
+++ b/ui/aura/test/aura_test_base.cc
@@ -178,6 +178,8 @@ void AuraTestBase::OnWmClientJankinessChanged(
     const std::set<Window*>& client_windows,
     bool janky) {}
 
+void AuraTestBase::OnWmWillCreateDisplay(const display::Display& display) {}
+
 void AuraTestBase::OnWmNewDisplay(
     std::unique_ptr<WindowTreeHostMus> window_tree_host,
     const display::Display& display) {
@@ -205,6 +207,11 @@ void AuraTestBase::OnWmPerformMoveLoop(
 
 void AuraTestBase::OnWmCancelMoveLoop(Window* window) {}
 
+void AuraTestBase::OnWmSetClientArea(
+    Window* window,
+    const gfx::Insets& insets,
+    const std::vector<gfx::Rect>& additional_client_areas) {}
+
 client::CaptureClient* AuraTestBase::GetCaptureClient() {
   return helper_->capture_client();
 }