Merge "Merge commit 'v1.13.0' into m/master" am: 4b7acd814f am: 3a12316430 am: 9274fdb007

Original change: https://android-review.googlesource.com/c/platform/external/libvpx/+/2435878

Change-Id: I63c8ffbd8387206256c4280b65204f050e3d8ccf
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>