Merge "AAPT2: Only print last uses-sdk tag" into sc-dev

    /** Adds an element to the list of children of the element. */

    void AddChild(std::unique_ptr<Element>& child) { children_.push_back(std::move(child)); }

    template <typename Predicate>

    void Filter(Predicate&& func) {

      children_.erase(std::remove_if(children_.begin(), children_.end(),

                                     [&](const auto& e) { return func(e.get()); }));

    }

    /** Retrieves the list of children of the element. */

    const std::vector<std::unique_ptr<Element>>& children() const {

      return children_;

  // Extract badging information

  auto root = Visit(element);

  // Filter out all "uses-sdk" tags besides the very last tag. The android runtime only uses the

  // attribute values from the last defined tag.

  std::vector<UsesSdkBadging*> filtered_uses_sdk_tags;

  for (const auto& child : root->children()) {

    if (auto uses_sdk = ElementCast<UsesSdkBadging>(child.get())) {

      filtered_uses_sdk_tags.emplace_back(uses_sdk);

    }

  }

  filtered_uses_sdk_tags.pop_back();

  root->Filter([&](const ManifestExtractor::Element* e) {

    return std::find(filtered_uses_sdk_tags.begin(), filtered_uses_sdk_tags.end(), e) !=

           filtered_uses_sdk_tags.end();

  });

  // Print the elements in order seen

  Print(root.get(), printer);