Merge "[dexopt] Allow secondary dex files to generate app images"

Dex2oatFileWrapper maybe_open_app_image(const char* out_oat_path,

        bool generate_app_image, bool is_public, int uid, bool is_secondary_dex) {

    // We don't create an image for secondary dex files.

    if (is_secondary_dex) {

        return Dex2oatFileWrapper();

    }

    const std::string image_path = create_image_filename(out_oat_path);

    if (image_path.empty()) {

        // Happens when the out_oat_path has an unknown extension.