Steps to reproduce

Fuchsia's fake-display will migrate to sysmem2 soon, at which point usages of fake-display (such as in flutter tests) will need to route fuchsia.sysmem2.Allocator.

Expected results

If fuchsia.sysmem2.Allocator is routed, the protocol routing error will be avoided and tests will pass (even with fake-display using fuchsia.sysmem2.Allocator).

Actual results

Fuchsia would log a protocol routing error indicating that fuchsia.sysmem2.Allocator wasn't made available, and some tests would fail. The error would look like this:

[display-coordinator-connector] WARN: Required protocol `fuchsia.sysmem2.Allocator` was not available for target component [...]

Code sample

See the PR for tests that will fail if we don't route fuchsia.sysmem2.Allocator in those tests.

Screenshots or Video

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Logs

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Flutter Doctor output

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