anchor.diff:     */
     static const ManifestWarningCode NO_TOUCHSCREEN_FEATURE = const ManifestWarningCode(
         'NO_TOUCHSCREEN_FEATURE',
  -      "The default \"android.hardware.touchscreen\" needs to be optional for Chrome OS. " +
  -          "Consider adding " +
  -          "<uses-feature android:name=\"android.hardware.touchscreen\" android:required=\"false\" />" +
  -          " to the manifest.",
  +      "The default \"android.hardware.touchscreen\" needs to be optional for Chrome OS. ",
         correction: "Consider adding " +
             "<uses-feature android:name=\"android.hardware.touchscreen\" android:required=\"false\" />" +
             " to the manifest.");
  
positive.code:    * A code indicating that a specified hardware feature is not supported on Chrome OS.
     */
    static const ManifestWarningCode UNSUPPORTED_CHROME_OS_HARDWARE =
        const ManifestWarningCode(
            'UNSUPPORTED_CHROME_OS_HARDWARE',
            "This feature is not supported on Chrome OS. Try adding " +
                "`android:required=\"false\"` for this feature.",
            correction:
                "Try adding `android:required=\"false\"` for this " + "feature.");
  
  
negative.code:    * A code indicating that a specified permission is not supported on Chrome OS.
     */
    static const ManifestWarningCode PERMISSION_IMPLIES_UNSUPPORTED_HARDWARE =
        const ManifestWarningCode('PERMISSION_IMPLIES_UNSUPPORTED_HARDWARE',
            "Permission makes app incompatible for Chrome OS, consider adding optional {0} feature tag, ",
            correction: " Try adding `<uses-feature " +
                "android:name=\"{0}\"  android:required=\"false\">`.");
  
    /**
     * A code indicating that the camera permissions is not supported on Chrome OS.
     */
    static const ManifestWarningCode CAMERA_PERMISSIONS_INCOMPATIBLE = const ManifestWarningCode(
        'CAMERA_PERMISSIONS_INCOMPATIBLE',
        "Camera permissions make app incompatible for Chrome OS, consider adding " +
            "optional features \"android.hardware.camera\" and \"android.hardware.camera.autofocus\".",
        correction: "Try adding `<uses-feature " +
            "android:name=\"android.hardware.camera\"  android:required=\"false\">` " +
            "`<uses-feature " +
            "android:name=\"android.hardware.camera.autofocus\"  android:required=\"false\">`.");
  
    /**
     * A code indicating that the activity is set to be non resizable.
  