Copy the AOSP state of Cronet

This is a the result of `cp -r $AOSP/packages/modules/Cronet .`, and
brings this branch to the same state as AOSP.

Bug: 156368607
Merged-In: I202ae620116ed0e29be734dcfdf72baf80eec720
Change-Id: I998f3a5f767fa78774c53cf8f8e9db6673f6acab
34 files changed