Simplify WindowManager::OnWmSetBounds

ash/mus/window_manager.cc

Index: ash/mus/window_manager.cc
diff --git a/ash/mus/window_manager.cc b/ash/mus/window_manager.cc
index ccae4d91e0212a5d87c3c114cf13fa21f642228f..1ca8f714ccac3829c4836fd862eb526dc087f8ab 100644
--- a/ash/mus/window_manager.cc
+++ b/ash/mus/window_manager.cc
@@ -316,12 +316,11 @@ void WindowManager::SetWindowManagerClient(aura::WindowManagerClient* client) {
   ash::Shell::set_window_manager_client(client);
 }
 
-bool WindowManager::OnWmSetBounds(aura::Window* window, gfx::Rect* bounds) {
+void WindowManager::OnWmSetBounds(aura::Window* window,
+                                  const gfx::Rect& bounds) {
   // TODO(sky): this indirectly sets bounds, which is against what
   // OnWmSetBounds() recommends doing. Remove that restriction, or fix this.
-  WmWindow::Get(window)->SetBounds(*bounds);
-  *bounds = window->bounds();
-  return true;
+  WmWindow::Get(window)->SetBounds(bounds);
 }
 
 bool WindowManager::OnWmSetProperty(