ScanRequestProxy: Add metrics for throttling

Also, moved the |verifyNoMoreInteractions| in ScanRequestProxyTest to
the test cleanup.

Bug: 76429171
Test: Unit tests
Change-Id: I7831cb8c7c4a39429168c279e1f6cd2d97490513
5 files changed
tree: 566a26df242bcd9852ce51d6fe7347aa79edfcc8
  1. service/
  2. PREUPLOAD.cfg