Update bool WindowManager::OnWmSetBounds() to match with its desirable behavior.

ui/aura/test/aura_test_base.cc

 // Copyright (c) 2012 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 "ui/aura/test/aura_test_base.h"
 
 #include "ui/aura/client/window_parenting_client.h"
 #include "ui/aura/mus/property_utils.h"
 #include "ui/aura/mus/window_tree_client.h"
 #include "ui/aura/mus/window_tree_host_mus.h"
@@ skipping 138 matching lines @@
 
 void AuraTestBase::OnEmbedRootDestroyed(Window* root) {}
 
 void AuraTestBase::OnLostConnection(WindowTreeClient* client) {}
 
 void AuraTestBase::OnPointerEventObserved(const ui::PointerEvent& event,
                                           Window* target) {}
 
 void AuraTestBase::SetWindowManagerClient(WindowManagerClient* client) {}
 
-bool AuraTestBase::OnWmSetBounds(Window* window, gfx::Rect* bounds) {
-  return true;
-}
+void AuraTestBase::OnWmSetBounds(Window* window, const gfx::Rect& bounds) {}
 
 bool AuraTestBase::OnWmSetProperty(
     Window* window,
     const std::string& name,
     std::unique_ptr<std::vector<uint8_t>>* new_data) {
   return true;
 }
 
 Window* AuraTestBase::OnWmCreateTopLevelWindow(
     ui::mojom::WindowType window_type,
@@ skipping 64 matching lines @@
 
 void AuraTestBaseWithType::SetUp() {
   DCHECK(!setup_called_);
   setup_called_ = true;
   ConfigureBackend(GetParam());
   AuraTestBase::SetUp();
 }
 
 }  // namespace test
 }  // namespace aura