Utils: Replace FileChooser::path() by filePath().toString()

Keep the old method for now to ease downstream porting.

The change is kept mechanical, there's a lot of cleanup possible now
on the user code side.

Change-Id: I936baedd45b7ba057f1c789a1bec896886f48eff
Reviewed-by: André Hartmann <aha_1980@gmx.de>
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/android/androidsettingswidget.cpp

@@ -990,7 +990,7 @@ void AndroidSettingsWidget::downloadSdk()
         if (javaSummaryWidget->allRowsOk()) {
             auto javaPath = Utils::FilePath::fromUserInput(m_ui->OpenJDKLocationPathChooser->rawPath());
             m_sdkDownloader->downloadAndExtractSdk(javaPath.toString(),
-                                                 m_ui->SDKLocationPathChooser->path());
+                                                 m_ui->SDKLocationPathChooser->filePath().toString());
         }
     }
 }