Move LoggingTerminalWriter out of test

...so that it can be used by the main code base.

--
Change-Id: Ibf59d74ab1b0cca9bd9406bb76ee6e71189653bf
Reviewed-on: https://bazel-review.googlesource.com/#/c/3903
MOS_MIGRATED_REVID=125950656
diff --git a/src/test/java/com/google/devtools/build/lib/runtime/ExperimentalStateTrackerTest.java b/src/test/java/com/google/devtools/build/lib/runtime/ExperimentalStateTrackerTest.java
index da25a61..a416abf 100644
--- a/src/test/java/com/google/devtools/build/lib/runtime/ExperimentalStateTrackerTest.java
+++ b/src/test/java/com/google/devtools/build/lib/runtime/ExperimentalStateTrackerTest.java
@@ -32,9 +32,9 @@
 import com.google.devtools.build.lib.skyframe.LoadingPhaseStartedEvent;
 import com.google.devtools.build.lib.skyframe.PackageProgressReceiver;
 import com.google.devtools.build.lib.testutil.FoundationTestCase;
-import com.google.devtools.build.lib.testutil.LoggingTerminalWriter;
 import com.google.devtools.build.lib.testutil.ManualClock;
 import com.google.devtools.build.lib.util.Pair;
+import com.google.devtools.build.lib.util.io.LoggingTerminalWriter;
 import com.google.devtools.build.lib.vfs.Path;
 import com.google.devtools.build.lib.vfs.PathFragment;
 import com.google.devtools.build.lib.view.test.TestStatus.BlazeTestStatus;