Fix an error and add a new method in the ShareUtils class

Fix the error due to the rebase on the dev branch of this branch
Add a shareText method in the ShareUtils class which has 3 parameters and calls
the original shareText method with an empty string for the
imagePreviewUrl param.

app/src/main/java/org/schabi/newpipe/RouterActivity.java

@@ -234,7 +234,7 @@ public class RouterActivity extends AppCompatActivity {
                 .setPositiveButton(R.string.open_in_browser,
                         (dialog, which) -> ShareUtils.openUrlInBrowser(this, url))
                 .setNegativeButton(R.string.share,
-                        (dialog, which) -> ShareUtils.shareText(this, "", url, "")) //no subject
+                        (dialog, which) -> ShareUtils.shareText(this, "", url)) // no subject
                 .setNeutralButton(R.string.cancel, null)
                 .setOnDismissListener(dialog -> finish())
                 .show();

app/src/main/java/org/schabi/newpipe/error/ErrorActivity.java

@@ -195,7 +195,8 @@ public class ErrorActivity extends AppCompatActivity {
                 onBackPressed();
                 return true;
             case R.id.menu_item_share_error:
-                ShareUtils.shareText(this, getString(R.string.error_report_title), buildJson());
+                ShareUtils.shareText(getApplicationContext(),
+                        getString(R.string.error_report_title), buildJson());
                 return true;
             default:
                 return false;

app/src/main/java/org/schabi/newpipe/util/external_communication/ShareUtils.java

@@ -259,6 +259,23 @@ public final class ShareUtils {
         openAppChooser(context, shareIntent, false);
     }
 
+    /**
+     * Open the android share sheet to share a content.
+     *
+     * For Android 10+ users, a content preview is shown, which includes the title of the shared
+     * content.
+     * <p>
+     * This calls {@link #shareText(Context, String, String, String)} with an empty string for the
+     * imagePreviewUrl parameter.
+     *
+     * @param context the context to use
+     * @param title   the title of the content
+     * @param content the content to share
+     */
+    public static void shareText(final Context context, final String title, final String content) {
+        shareText(context, title, content, "");
+    }
+
     /**
      * Copy the text to clipboard, and indicate to the user whether the operation was completed
      * successfully using a Toast.