cherry-pick SdkSandbox atom message to AOSP.

Test: build passed.
Bug: 301923349
Merged-In: I766fa6939efc92833081dfc80378e634ac696cc1
Merged-In: I0f3332de525b64aaa9c305dc62d6417145157ffd
Change-Id: Ic5d103b7394a2dbf58b176cf2520cb473b60bb1c
3 files changed
tree: 2e532ba03ad297ffadede5d1c1370f4488c9a768
  1. stats/
  2. OWNERS