Offer `TestLooperManager` on Ravenwood.

Common test utilities like `TestableLooper` rely on being able to
drive `Looper` interactions via `TestLooperManager` which can only
be obtained via `Instrumentation`.

This change integrates with the common `InstrumentationRegistry`
library which is how most tests obtain their `Instrumentation`
instance.  We play an odd dance with `java_host_for_device` and
`java_device_for_host` to get a version of `androidx.test.monitor`
that we can link against our runtime.  (The build system otherwise
gets excited that we're trying to compile an Android-linked library
into what appears to be a Java-linked library, but we know that we're
offering the Android runtime.)

Fix subtle bug in `MessageQueue_host` where a requested wake might
race with the `for (;;)` loop in `MessageQueue.next()`; if a wake is
pending, it's a valid reason to return from `nativePollOnce()`.

Add timeout logic to `RavenwoodRuleImpl` which can be enabled to
dump all our stack traces just before Tradefed times out, to aid in
debugging deadlocks; disabled by default.

Bug: 319647875
Test: atest SystemUiRoboTests
Test: atest SystemUiRavenTests
Test: atest FrameworksCoreTestsRavenwood:TestLooperManagerTest
Change-Id: I13605d32df0c3e6758f541d5e75a6bdaf44368db

0 files changed, 0 insertions, 0 deletions