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Added new libraries to the Chromium third-party library collection:
1. Netty 4 Server. See http://netty.io
2. Netty fork of Tomcat Native (netty-tcnative). See http://netty.io/wiki/forked-tomcat-native.html
and the library tc-native depends on:
3. 'Apache Portable Runtime'. See http://apr.apache.org

The server provides support for Http/2 protocol, which is needed for testing some of the Cronet features
on Android, in particular, the new Bidirectional Streaming API.

To build the netty-tcnative library call:
ninja -C out/Debug netty-tcnative

The output files can be found here:
- out/Debug/lib/libnetty-tcnative.so
- out/Debug/lib.java/netty-tcnative.jar

BUG=563732

Committed: https://crrev.com/6dd98af3db0b8e809ed95ff66620181efbf3f8f1
Cr-Commit-Position: refs/heads/master@{#370791}

Review URL: https://codereview.chromium.org/1537473002

Cr-Commit-Position: refs/heads/master@{#372172}