Update lynx SVN to 15 am: 298ba980a2 am: 6d1b69dcd9 am: 08e2a4d187

Original change: https://googleplex-android-review.googlesource.com/c/device/google/lynx/+/24392319

Change-Id: Ibb344f9f09a95f9268492b86e0322a24d9107799
Signed-off-by: Automerger Merge Worker <[email protected]>