Merge from http://go/wvgerrit/105767
To avoid conflict with metrics.proto in
frameworks/av/drm/libmediadrm/proto.
This is in preparation of moving metrics_dump tool
to build under Android.
bug: 161783052
Test: unit test
Test: Play Movies & Tv and Netflix streaming
Change-Id: I2406b66db4d61cca7c6260ea8847a555d96c8d42
Changes to a much more efficient and more reusable protobuf format for
metrics.
Test: Widevine tests, Google Play and MediaDrm CTS test.
Bug: 73724218
Change-Id: I3299051d7a16bcd7758c8f272415ca40e10c1313