Merge "Merge "WebView: clarify CookieManager docs" am: 5844882671 am: d2243be46a" into rvc-qpr-dev-plus-aosp am: 8e92545adf

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1569302

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I9d66b86d7ad4990e3e8910816cfb6d78587b4d83