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

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

Change-Id: I6c8358c81bbc7a08802ef027fcd32adea4821ba0
tree: 48e2856d03d84f03ef2d376e309ead7b21de01b7
  1. core/
  2. services/
  3. tests/