Merge "Update javadoc to use complete sentence" am: 1b33b21814 am: 43299a816e

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1323953

Change-Id: I357ae71b7f86ed3560333a67a2444eb8bb93c71c
tree: 378243e8b5ffdd1ac8964cdea9fbd88843ae54ef
  1. core/
  2. services/
  3. tests/