Set FLAG_HARDWARE_ACCELERATED in ShadowWindow constructor.

This is needed for ShadowPixelCopy to work correctly on Android S.

PiperOrigin-RevId: 628494031

shadows/framework/src/main/java/org/robolectric/shadows/ShadowWindow.java

@@ -4,6 +4,7 @@
 import static android.os.Build.VERSION_CODES.N;
 import static android.os.Build.VERSION_CODES.Q;
 import static android.os.Build.VERSION_CODES.R;
+import static android.os.Build.VERSION_CODES.S;
 import static org.robolectric.RuntimeEnvironment.getApiLevel;
 import static org.robolectric.util.reflector.Reflector.reflector;
 
@@ -13,6 +14,7 @@
 import android.view.FrameMetrics;
 import android.view.Window;
 import android.view.Window.OnFrameMetricsAvailableListener;
+import android.view.WindowManager;
 import java.util.HashSet;
 import java.util.Set;
 import org.robolectric.annotation.HiddenApi;
@@ -43,7 +45,16 @@ public static Window create(Context context) throws ClassNotFoundException {
         : "com.android.internal.policy.impl.PhoneWindow";
     Class<? extends Window> phoneWindowClass =
         (Class<? extends Window>) Window.class.getClassLoader().loadClass(className);
-    return ReflectionHelpers.callConstructor(phoneWindowClass, ClassParameter.from(Context.class, context));
+    return ReflectionHelpers.callConstructor(
+        phoneWindowClass, ClassParameter.from(Context.class, context));
+  }
+
+  @Implementation(minSdk = S)
+  protected void __constructor__(Context context) {
+    reflector(WindowReflector.class, realWindow).__constructor__(context);
+    realWindow.setFlags(
+        WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED,
+        WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED);
   }
 
   @Implementation
@@ -139,6 +150,9 @@ public void reportOnFrameMetricsAvailable(
   @ForType(Window.class)
   interface WindowReflector {
 
+    @Direct
+    void __constructor__(Context context);
+
     @Direct
     void setFlags(int flags, int mask);