Merge "Revert "logd: yield in FlushTo() if a write is pending"" am: 734d594d71

Original change: https://android-review.googlesource.com/c/platform/system/logging/+/1492776

Change-Id: I9fae98911e9944d36437b5343a9aac3d7cbc417e
tree: 15ed7eafa6823c1f8eef86bb28ad461b6d79eb5b
  1. liblog/
  2. logcat/
  3. logd/
  4. logwrapper/
  5. OWNERS
  6. PREUPLOAD.cfg
  7. TEST_MAPPING