am: Add set-media-foreground-service command.

Changes add command to set media foreground service inactive:
am set-media-foreground-service inactive [--user USER_ID] <PACKAGE> <NOTIFICATION_ID>
e.g: adb shell am set-media-foreground-service inactive --user 0  com.spotify.music 2131430868

Notification ID associated with foreground service can be found out
using 'dumpsys activity services` and looking for foregrondId.

Flag: com.android.media.flags.enable_notifying_activity_manager_with_media_session_status_change
BUG: 281762171
Test: atest cts/tests/app/src/android/app/cts/ActivityManagerNotifyMediaFGSTypeTest.java

Change-Id: Iad333b081c989b3164f2aa335361117c28b0bf7b
Signed-off-by: Pradeep Sawlani <sawlani@google.com>
diff --git a/services/core/java/com/android/server/am/ActivityManagerShellCommand.java b/services/core/java/com/android/server/am/ActivityManagerShellCommand.java
index 02e2c39..d3d3fc9 100644
--- a/services/core/java/com/android/server/am/ActivityManagerShellCommand.java
+++ b/services/core/java/com/android/server/am/ActivityManagerShellCommand.java
@@ -39,6 +39,8 @@
 import static com.android.internal.app.procstats.ProcessStats.ADJ_MEM_FACTOR_LOW;
 import static com.android.internal.app.procstats.ProcessStats.ADJ_MEM_FACTOR_MODERATE;
 import static com.android.internal.app.procstats.ProcessStats.ADJ_MEM_FACTOR_NORMAL;
+import static com.android.media.flags.Flags.enableNotifyingActivityManagerWithMediaSessionStatusChange;
+import static com.android.media.flags.Flags.FLAG_ENABLE_NOTIFYING_ACTIVITY_MANAGER_WITH_MEDIA_SESSION_STATUS_CHANGE;
 import static com.android.server.am.ActivityManagerDebugConfig.LOG_WRITER_INFO;
 import static com.android.server.am.ActivityManagerDebugConfig.TAG_AM;
 import static com.android.server.am.ActivityManagerDebugConfig.TAG_WITH_CLASS_NAME;
@@ -445,6 +447,8 @@
                     return runCapabilities(pw);
                 case "set-app-zygote-preload-timeout":
                     return runSetAppZygotePreloadTimeout(pw);
+                case "set-media-foreground-service":
+                    return runSetMediaForegroundService(pw);
                 default:
                     return handleDefaultCommands(cmd);
             }
@@ -454,6 +458,48 @@
         return -1;
     }
 
+    int runSetMediaForegroundService(PrintWriter pw) throws RemoteException {
+        mInternal.enforceCallingPermission(
+                android.Manifest.permission.CHANGE_COMPONENT_ENABLED_STATE,
+                "runSetMediaForegroundService()");
+        final PrintWriter err = getErrPrintWriter();
+        if (!enableNotifyingActivityManagerWithMediaSessionStatusChange()) {
+            err.println("Error: flag "
+                    + FLAG_ENABLE_NOTIFYING_ACTIVITY_MANAGER_WITH_MEDIA_SESSION_STATUS_CHANGE
+                    + " not enabled");
+            return -1;
+        }
+        int userId = UserHandle.USER_CURRENT;
+        final String cmd = getNextArgRequired();
+        if ("inactive".equals(cmd)) {
+            String opt;
+            while ((opt = getNextOption()) != null) {
+                if (opt.equals("--user")) {
+                    userId = UserHandle.parseUserArg(getNextArgRequired());
+                    if (userId == UserHandle.USER_ALL) {
+                        err.println(
+                                "Error: Can't set media fgs inactive with user 'all'");
+                        return -1;
+                    }
+                } else {
+                    err.println("Error: Unknown option: " + opt);
+                    return -1;
+                }
+            }
+            final String pkgName = getNextArgRequired();
+            final int notificationId = Integer.parseInt(getNextArgRequired());
+            if (notificationId == 0) {
+                err.println("Error: notification id cannot be zero");
+                return -1;
+            }
+            mInternal.mInternal.notifyInactiveMediaForegroundService(pkgName,
+                    userId, notificationId);
+            return 0;
+        }
+        err.println("Error: Unknown set-media-foreground-service command: " + cmd);
+        return -1;
+    }
+
     int runSetAppZygotePreloadTimeout(PrintWriter pw) throws RemoteException {
         final String timeout = getNextArgRequired();
         final int timeoutMs = Integer.parseInt(timeout);
@@ -4637,6 +4683,9 @@
             pw.println("         --protobuf: format output using protobuffer");
             pw.println("  set-app-zygote-preload-timeout <TIMEOUT_IN_MS>");
             pw.println("         Set the timeout for preloading code in the app-zygote");
+            pw.println("  set-media-foreground-service inactive [--user USER_ID]"
+                    + " <PACKAGE> <NOTIFICATION_ID>");
+            pw.println("         Set an app's media foreground service inactive.");
             Intent.printIntentArgsHelp(pw, "");
         }
     }