我按照建议的here做了所有事情，但却被卡住了
File "C:\Users\Administrator\Desktop\depot_tools\python276_bin\lib\multiproce
sing\pool.py", line 554, in get
raise self._value
Exception: Environment variable "SYSTEMROOT" required to be set to valid path
Error: Command 'C:\\Users\\Administrator\\Desktop\\depot_tools\\python276_bin\\
ython.exe src/build/gyp_chromium' returned non-zero exit status 1 in C:\Users\A
ministrator\Desktop\chromium
Hook ''C:\Users\Administrator\Desktop\depot_tools\python276_bin\python.exe' src
build/gyp_chromium' took 164.66 secs
在运行gclient runhooks时。
有任何帮助吗？另外我只需要沙盒，可以在任何地方使用任何预编译的二进制文件吗？