Initial commit of Content Suggestions (overview long press) Manager.

Test: compile
Bug: 120865921
Change-Id: I9f8310112bedc883406f0f50a99041f542036fd9
diff --git a/services/core/java/com/android/server/wm/ActivityTaskManagerService.java b/services/core/java/com/android/server/wm/ActivityTaskManagerService.java
index 42121ca..28515ff 100644
--- a/services/core/java/com/android/server/wm/ActivityTaskManagerService.java
+++ b/services/core/java/com/android/server/wm/ActivityTaskManagerService.java
@@ -7012,5 +7012,12 @@
                 return mStackSupervisor.getActivityMetricsLogger().getLaunchObserverRegistry();
             }
         }
+
+        @Override
+        public ActivityManager.TaskSnapshot getTaskSnapshot(int taskId, boolean reducedResolution) {
+            synchronized (mGlobalLock) {
+                return ActivityTaskManagerService.this.getTaskSnapshot(taskId, reducedResolution);
+            }
+        }
     }
 }