Window Manager | 窗口管理框架
暂无描述
Input Method Framework|输入法框架，主要是拉通应用和输入法，保证应用可以通过输入法进行文本输入
Third-party open-source software flutter | 三方开源软件flutter
Skia is a complete 2D graphic library for drawing Text, Geometries, and Images.
Compilation and building framework and scripts | 编译构建框架和脚本
