Simplify run shell as root (#2055)

* Simplify run as root for Android Command

* hepp

lib/core/engine/command/android.js

@@ -4,8 +4,8 @@ const log = intel.getLogger('browsertime.command.android');
 /**
  * Provides functionality to interact with an Android device through shell commands.
  *
- * @class
  * @see https://www.sitespeed.io/documentation/sitespeed.io/mobile-phones/#test-on-android
+ * @class
  */
 export class AndroidCommand {
   constructor(options) {
@@ -36,4 +36,29 @@ export class AndroidCommand {
       }
     } else throw new Error('Android is not configured');
   }
+
+  /**
+   * Runs a shell command on the connected Android device as the root user.
+   * This method requires the Android device to be properly configured and that you
+   * rooted the device.
+   *
+   * @async
+   * @param {string} command - The shell command to run on the Android device as root.
+   * @returns {Promise<string>} A promise that resolves with the result of the command or rejects if there's an error.
+   * @throws {Error} Throws an error if Android is not configured or if the command fails.
+   */
+  async shellAsRoot(command) {
+    if (isAndroidConfigured(this.options)) {
+      log.debug('Run %s', command);
+      try {
+        this.a = new Android(this.options);
+        return this.a._runAsRootAndGet(command);
+      } catch (error) {
+        log.error('Could not run shell command as root %s', command, error);
+        throw new Error(
+          `Could not run Android shell commmand as root ${command}`
+        );
+      }
+    } else throw new Error('Android is not configured');
+  }
 }