Drop unnecessary override of OnWindowBoundsChanged in NativeWidgetMus::MusWindowObserver

ui/platform_window/stub/stub_window.cc

Index: ui/platform_window/stub/stub_window.cc
diff --git a/ui/platform_window/stub/stub_window.cc b/ui/platform_window/stub/stub_window.cc
index da7fd6227b78c7e3430fa07dfcd07d093e99c047..6412a62c662efe881a1e3229a9024c07586ab16f 100644
--- a/ui/platform_window/stub/stub_window.cc
+++ b/ui/platform_window/stub/stub_window.cc
@@ -8,8 +8,11 @@
 
 namespace ui {
 
-StubWindow::StubWindow(PlatformWindowDelegate* delegate) : delegate_(delegate) {
-  if (delegate_)
+StubWindow::StubWindow(PlatformWindowDelegate* delegate,
+                       bool use_default_accelerated_widget)
+    : delegate_(delegate) {
+  DCHECK(delegate);
+  if (use_default_accelerated_widget)
     delegate_->OnAcceleratedWidgetAvailable(gfx::kNullAcceleratedWidget, 1.f);
 }
 
@@ -23,16 +26,14 @@ void StubWindow::Hide() {
 }
 
 void StubWindow::Close() {
-  if (delegate_)
-    delegate_->OnClosed();
+  delegate_->OnClosed();
 }
 
 void StubWindow::SetBounds(const gfx::Rect& bounds) {
   if (bounds_ == bounds)
     return;
   bounds_ = bounds;
-  if (delegate_)
-    delegate_->OnBoundsChanged(bounds);
+  delegate_->OnBoundsChanged(bounds);
 }
 
 gfx::Rect StubWindow::GetBounds() {