DO NOT MERGE: De-guava BroadcastInterceptingContext and move it to testutils.

Removing the static dependency on guava reduces test compile time
by about 20 seconds on a Z840, thus substantially speeding up the
compile/test cycle.

Make FutureIntent public instead of package-private because it is
used directly by NetworkPolicyManagementServiceTest, which as of
this CL is now in a different package.

(cherry picked from commit 281a17c9580de5c9898be7d9654d428801976511)

Test: runtest frameworks-services -c com.android.server.ConnectivityServiceTest  # PASS
Test: runtest frameworks-services -c com.android.server.NetworkPolicyManagerServiceTest  # PASS
Test: runtest frameworks-services -c com.android.server.net.NetworkStatsServiceTest  # PASS
Test: runtest frameworks-services -c com.android.server.NetworkManagementServiceTest  # Already failing.
Bug: 31479480

(cherry picked from commit 3c295b59f5767904656235db48692906148ab631)

Change-Id: I8a95d4618dced81f173d2b38b9c1dfe3860b348a
diff --git a/services/tests/servicestests/src/com/android/server/ConnectivityServiceTest.java b/services/tests/servicestests/src/com/android/server/ConnectivityServiceTest.java
index 9bf3c2c..f95a8c6 100644
--- a/services/tests/servicestests/src/com/android/server/ConnectivityServiceTest.java
+++ b/services/tests/servicestests/src/com/android/server/ConnectivityServiceTest.java
@@ -76,6 +76,7 @@
 import android.util.LogPrinter;
 
 import com.android.internal.util.WakeupMessage;
+import com.android.internal.util.test.BroadcastInterceptingContext;
 import com.android.internal.util.test.FakeSettingsProvider;
 import com.android.server.connectivity.NetworkAgentInfo;
 import com.android.server.connectivity.NetworkMonitor;
diff --git a/services/tests/servicestests/src/com/android/server/NetworkManagementServiceTest.java b/services/tests/servicestests/src/com/android/server/NetworkManagementServiceTest.java
index 0d5daa5..f841bf9 100644
--- a/services/tests/servicestests/src/com/android/server/NetworkManagementServiceTest.java
+++ b/services/tests/servicestests/src/com/android/server/NetworkManagementServiceTest.java
@@ -24,6 +24,7 @@
 import android.test.AndroidTestCase;
 import android.test.suitebuilder.annotation.LargeTest;
 import com.android.server.net.BaseNetworkObserver;
+import com.android.internal.util.test.BroadcastInterceptingContext;
 
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.mock;
diff --git a/services/tests/servicestests/src/com/android/server/NetworkPolicyManagerServiceTest.java b/services/tests/servicestests/src/com/android/server/NetworkPolicyManagerServiceTest.java
index 1a943a3..aeeca79 100644
--- a/services/tests/servicestests/src/com/android/server/NetworkPolicyManagerServiceTest.java
+++ b/services/tests/servicestests/src/com/android/server/NetworkPolicyManagerServiceTest.java
@@ -78,6 +78,7 @@
 import android.text.format.Time;
 import android.util.TrustedTime;
 
+import com.android.internal.util.test.BroadcastInterceptingContext;
 import com.android.server.net.NetworkPolicyManagerService;
 import com.google.common.util.concurrent.AbstractFuture;
 
diff --git a/services/tests/servicestests/src/com/android/server/net/NetworkStatsServiceTest.java b/services/tests/servicestests/src/com/android/server/net/NetworkStatsServiceTest.java
index 94c6711..4b69eb3 100644
--- a/services/tests/servicestests/src/com/android/server/net/NetworkStatsServiceTest.java
+++ b/services/tests/servicestests/src/com/android/server/net/NetworkStatsServiceTest.java
@@ -88,7 +88,7 @@
 import android.util.TrustedTime;
 
 import com.android.internal.net.VpnInfo;
-import com.android.server.BroadcastInterceptingContext;
+import com.android.internal.util.test.BroadcastInterceptingContext;
 import com.android.server.net.NetworkStatsService;
 import com.android.server.net.NetworkStatsService.NetworkStatsSettings;
 import com.android.server.net.NetworkStatsService.NetworkStatsSettings.Config;
diff --git a/services/tests/servicestests/src/com/android/server/BroadcastInterceptingContext.java b/tests/utils/testutils/java/com/android/internal/util/test/BroadcastInterceptingContext.java
similarity index 89%
rename from services/tests/servicestests/src/com/android/server/BroadcastInterceptingContext.java
rename to tests/utils/testutils/java/com/android/internal/util/test/BroadcastInterceptingContext.java
index 13657ab..27b7419 100644
--- a/services/tests/servicestests/src/com/android/server/BroadcastInterceptingContext.java
+++ b/tests/utils/testutils/java/com/android/internal/util/test/BroadcastInterceptingContext.java
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.server;
+package com.android.internal.util.test;
 
 import android.content.BroadcastReceiver;
 import android.content.Context;
@@ -25,13 +25,12 @@
 import android.os.Handler;
 import android.os.UserHandle;
 
-import com.google.common.collect.Lists;
-import com.google.common.util.concurrent.AbstractFuture;
-
+import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Future;
+import java.util.concurrent.FutureTask;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 
@@ -42,9 +41,17 @@
 public class BroadcastInterceptingContext extends ContextWrapper {
     private static final String TAG = "WatchingContext";
 
-    private final List<BroadcastInterceptor> mInterceptors = Lists.newArrayList();
+    private final List<BroadcastInterceptor> mInterceptors = new ArrayList<>();
 
-    public class BroadcastInterceptor extends AbstractFuture<Intent> {
+    public abstract class FutureIntent extends FutureTask<Intent> {
+        public FutureIntent() {
+            super(
+                () -> { throw new IllegalStateException("Cannot happen"); }
+            );
+        }
+    }
+
+    public class BroadcastInterceptor extends FutureIntent {
         private final BroadcastReceiver mReceiver;
         private final IntentFilter mFilter;
 
@@ -82,11 +89,11 @@
         super(base);
     }
 
-    public Future<Intent> nextBroadcastIntent(String action) {
+    public FutureIntent nextBroadcastIntent(String action) {
         return nextBroadcastIntent(new IntentFilter(action));
     }
 
-    public Future<Intent> nextBroadcastIntent(IntentFilter filter) {
+    public FutureIntent nextBroadcastIntent(IntentFilter filter) {
         final BroadcastInterceptor interceptor = new BroadcastInterceptor(null, filter);
         synchronized (mInterceptors) {
             mInterceptors.add(interceptor);