Merge "Activate apexes in /system_ext/apex, /vendor/apex" am: 5f28d3c7

static std::vector<apex::ApexFile> ActivateApexPackages() {

    // The logic here is (partially) copied and adapted from

    // system/apex/apexd/apexd_main.cpp.

    // system/apex/apexd/apexd.cpp.

    //

    // Only scan the APEX directory under /system (within the chroot dir).

    // Only scan the APEX directory under /system, /system_ext and /vendor (within the chroot dir).

    std::vector<const char*> apex_dirs{apex::kApexPackageSystemDir, apex::kApexPackageSystemExtDir,

                                       apex::kApexPackageVendorDir};

    for (const auto& dir : apex_dirs) {

        // Cast call to void to suppress warn_unused_result.

    static_cast<void>(apex::scanPackagesDirAndActivate(apex::kApexPackageSystemDir));

        static_cast<void>(apex::scanPackagesDirAndActivate(dir));

    }

    return apex::getActivePackages();

}