Created a test app that mimics game app.

This CL creates a test app that emulates game apps by using surfaceview in immersive mode for implementing ironwood P0 CUJs (b/244261956).
Demo: https://screencast.googleplex.com/cast/NTI2NDQ0Mzk5NTg0ODcwNHwzYTcxZWY1Yi1lZg

Test: manual
Bug: 244261956
Bug: 242247304

Change-Id: Iaee9fee5a343df0544057de485e9d6092b69b483
Merged-In: Iaee9fee5a343df0544057de485e9d6092b69b483

tests/FlickerTests/test-apps/flickerapp/AndroidManifest.xml

@@ -173,5 +173,17 @@
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
+        <activity android:name=".GameActivity"
+            android:taskAffinity="com.android.server.wm.flicker.testapp.GameActivity"
+            android:immersive="true"
+            android:theme="@android:style/Theme.NoTitleBar"
+            android:configChanges="screenSize"
+            android:label="GameApp"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
     </application>
 </manifest>

tests/FlickerTests/test-apps/flickerapp/res/layout/activity_surfaceview.xml

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ Copyright 2018 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/container"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@android:color/holo_orange_light">
+
+    <SurfaceView
+        android:id="@+id/surface_view"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"/>
+</LinearLayout>

tests/FlickerTests/test-apps/flickerapp/src/com/android/server/wm/flicker/testapp/ActivityOptions.java

@@ -87,4 +87,9 @@ public class ActivityOptions {
     public static final ComponentName NOTIFICATION_ACTIVITY_COMPONENT_NAME =
             new ComponentName(FLICKER_APP_PACKAGE,
                     FLICKER_APP_PACKAGE + ".NotificationActivity");
+
+    public static final String GAME_ACTIVITY_LAUNCHER_NAME = "GameApp";
+    public static final ComponentName GAME_ACTIVITY_COMPONENT_NAME =
+            new ComponentName(FLICKER_APP_PACKAGE,
+                   FLICKER_APP_PACKAGE + ".GameActivity");
 }

tests/FlickerTests/test-apps/flickerapp/src/com/android/server/wm/flicker/testapp/GameActivity.java

@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.wm.flicker.testapp;
+
+import android.app.Activity;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.PixelFormat;
+import android.os.Bundle;
+import android.view.SurfaceHolder;
+import android.view.SurfaceView;
+
+import androidx.core.view.ViewCompat;
+import androidx.core.view.WindowInsetsCompat;
+import androidx.core.view.WindowInsetsControllerCompat;
+
+public class GameActivity extends Activity implements SurfaceHolder.Callback {
+    private SurfaceHolder mSurfaceHolder;
+    private SurfaceView mSurfaceView;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.activity_surfaceview);
+
+        mSurfaceView = (SurfaceView) findViewById(R.id.surface_view);
+        mSurfaceView.setZOrderOnTop(true);
+        mSurfaceHolder = mSurfaceView.getHolder();
+        mSurfaceHolder.setFormat(PixelFormat.TRANSPARENT);
+        mSurfaceHolder.addCallback(this);
+    }
+
+    @Override
+    public void surfaceCreated(SurfaceHolder holder) {
+        hideSystemBars();
+    }
+
+    @Override
+    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
+        Canvas canvas = holder.lockCanvas();
+        canvas.drawColor(Color.BLUE);
+        holder.unlockCanvasAndPost(canvas);
+    }
+
+    @Override
+    public void surfaceDestroyed(SurfaceHolder holder) {
+    }
+
+    private void hideSystemBars() {
+        WindowInsetsControllerCompat windowInsetsController =
+                ViewCompat.getWindowInsetsController(getWindow().getDecorView());
+        if (windowInsetsController == null) {
+            return;
+        }
+        // Configure the behavior of the hidden system bars.
+        windowInsetsController.setSystemBarsBehavior(
+                WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
+        );
+        // Hide both the status bar and the navigation bar.
+        windowInsetsController.hide(WindowInsetsCompat.Type.systemBars());
+    }
+}