Hide use of private WorkQueue.Executor for Gerrit master

The Gerrit's internal WorkQueue.Executor class has become
private in master and cannot be referenced anymore from a plugin.

However, it was incorrect to refer to the internal implementation
of the executor and it is much better to simply use the implemented
interface.

Change-Id: I2c1d895d503730bea4b4b635db7e04f4126453f8
3 files changed
tree: 7ad202019755d903af5b784544034c619cda10ec
  1. src/
  2. tools/
  3. .gitignore
  4. bazlets.bzl
  5. BUILD
  6. external_plugin_deps.bzl
  7. WORKSPACE