[Android] Add a java.lang.System wrapper.
Add a basic JNI wrapper for java.lang.System. Expose just the
getProperty() method, eliminating a deprecated __system_property_get
usage as well as a seperate System.getProperty wrapper.
The remaining uses of __system_property_get will be removed in
https://codereview.chromium.org/1236283002/.
BUG=392196, 392191
Review URL: https://codereview.chromium.org/1283543003
Cr-Commit-Position: refs/heads/master@{#343245}
CrOS-Libchrome-Original-Commit: 130c6bf9db16a69fca8488da8e15e978470e7e8b
5 files changed