Add lint-baseline.txt files for cronet

In preparation for enabling API lint checking on java_sdk_library
adds lint-baseline.txt containing all the existing issues for these

Bug 156160613 tracks the work to clean up the issues found by lint.

Bug: 156126315
Bug: 156160613
Test: m checkapi
Change-Id: I92d4df71df83eb31750f155794e7b38c064e19cd
Merged-In: Ifaf87fa33cd972a2df7d394b2e4b083e5435e335
1 file changed