Reverts "Replace WindowInsetsController... with adb shell commands (#51843)"

testing/scenario_app/android/app/src/main/java/dev/flutter/scenarios/TestActivity.java

@@ -9,8 +9,12 @@
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Looper;
+import android.view.Window;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.core.view.WindowCompat;
+import androidx.core.view.WindowInsetsCompat;
+import androidx.core.view.WindowInsetsControllerCompat;
 import io.flutter.FlutterInjector;
 import io.flutter.embedding.engine.FlutterShellArgs;
 import io.flutter.embedding.engine.loader.FlutterLoader;
@@ -25,6 +29,7 @@ public abstract class TestActivity extends TestableFlutterActivity {
   @Override
   protected void onCreate(@Nullable Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
+    hideSystemBars(getWindow());
     testFlutterLoaderCallbackWhenInitializedTwice();
   }
 
@@ -104,4 +109,13 @@ protected void testFlutterLoaderCallbackWhenInitializedTwice() {
           }
         });
   }
+
+  private static void hideSystemBars(Window window) {
+    final WindowInsetsControllerCompat insetController =
+        WindowCompat.getInsetsController(window, window.getDecorView());
+    assert insetController != null;
+    insetController.setSystemBarsBehavior(
+        WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE);
+    insetController.hide(WindowInsetsCompat.Type.systemBars());
+  }
 }

testing/scenario_app/bin/run_android_tests.dart

@@ -298,23 +298,17 @@ Future<void> _run({
     });
 
     await step('Configuring emulator...', () async {
-      final List<List<String>> adbShellCommands = <List<String>> [
-        // Try to close all OS popups in the emulator, like "System UI stopped working".
-        <String>['am', 'broadcast', '-a', 'android.intent.action.CLOSE_SYSTEM_DIALOGS'],
-
-        // Don't show "this is how you exit fullscreen mode".
-        <String>['settings', 'put', 'secure', 'immersive_mode_confirmations', 'confirmed'],
-
-        // Hide all system bars.
-        <String>['settings', 'put', 'global', 'policy_control', 'immersive.full=*'],
-      ];
-
-      // Run all the commands.
-      for (final List<String> command in adbShellCommands) {
-        final int exitCode = await pm.runAndForward(<String>[adb.path, 'shell', ...command]);
-        if (exitCode != 0) {
-          panic(<String>['could not run command: ${command.join(' ')}']);
-        }
+      final int exitCode = await pm.runAndForward(<String>[
+        adb.path,
+        'shell',
+        'settings',
+        'put',
+        'secure',
+        'immersive_mode_confirmations',
+        'confirmed',
+      ]);
+      if (exitCode != 0) {
+        panic(<String>['could not configure emulator']);
       }
     });