photopicker/TEST_MAPPING

{
  "presubmit": [
    {
      "name": "PhotopickerTests",
      "options": []
    }
  ],
  "mediaprovider-mainline-presubmit": [
    {
      "name": "PhotopickerTests",
      "options": []
    }
  ],
  "mainline-presubmit": [
    {
      "name": "PhotopickerTests[com.google.android.mediaprovider.apex]",
      "options": []
    }
  ]
}