Replace Objects.firstNonNull() with MoreObjects.firstNonNull().

Objects.firstNonNull was deprecated in Guava 18 [1] and removed
in Guava 21 [2].

[1] https://github.com/google/guava/wiki/Release18
[2] https://github.com/google/guava/wiki/Release21

Change-Id: I8287d1766b6e30721cf732de661b6c659369ea4f
1 file changed
tree: f5c1f0f51ff4589bc536383af5994cd4f79cbfeb
  1. .gitignore
  2. .settings/
  3. BUCK
  4. BUILD
  5. LICENSE
  6. external_plugin_deps.bzl
  7. lib/
  8. src/