diff --git a/core/java/android/content/pm/PackageInfo.java b/core/java/android/content/pm/PackageInfo.java
index ba488f6..3230ee7 100644
--- a/core/java/android/content/pm/PackageInfo.java
+++ b/core/java/android/content/pm/PackageInfo.java
@@ -286,8 +286,26 @@
     /** @hide */
     public int overlayPriority;
 
-    /** @hide */
-    public boolean isStaticOverlay;
+
+    /**
+     * Flag for use with {@link #overlayFlags}. Marks the overlay as static, meaning it cannot
+     * be enabled/disabled at runtime.
+     * @hide
+     */
+    public static final int FLAG_OVERLAY_STATIC = 1 << 1;
+
+    /**
+     * Flag for use with {@link #overlayFlags}. Marks the overlay as trusted (not 3rd party).
+     * @hide
+     */
+    public static final int FLAG_OVERLAY_TRUSTED = 1 << 2;
+
+    /**
+     * Modifiers that affect the state of this overlay. See {@link #FLAG_OVERLAY_STATIC},
+     * {@link #FLAG_OVERLAY_TRUSTED}.
+     * @hide
+     */
+    public int overlayFlags;
 
     public PackageInfo() {
     }
@@ -342,8 +360,8 @@
         dest.writeString(restrictedAccountType);
         dest.writeString(requiredAccountType);
         dest.writeString(overlayTarget);
-        dest.writeInt(isStaticOverlay ? 1 : 0);
         dest.writeInt(overlayPriority);
+        dest.writeInt(overlayFlags);
     }
 
     public static final Parcelable.Creator<PackageInfo> CREATOR
@@ -394,8 +412,8 @@
         restrictedAccountType = source.readString();
         requiredAccountType = source.readString();
         overlayTarget = source.readString();
-        isStaticOverlay = source.readInt() != 0;
         overlayPriority = source.readInt();
+        overlayFlags = source.readInt();
 
         // The component lists were flattened with the redundant ApplicationInfo
         // instances omitted.  Distribute the canonical one here as appropriate.
diff --git a/core/java/android/content/pm/PackageParser.java b/core/java/android/content/pm/PackageParser.java
index cb9ecf3..4689f45 100644
--- a/core/java/android/content/pm/PackageParser.java
+++ b/core/java/android/content/pm/PackageParser.java
@@ -678,7 +678,15 @@
         pi.requiredAccountType = p.mRequiredAccountType;
         pi.overlayTarget = p.mOverlayTarget;
         pi.overlayPriority = p.mOverlayPriority;
-        pi.isStaticOverlay = p.mIsStaticOverlay;
+
+        if (p.mIsStaticOverlay) {
+            pi.overlayFlags |= PackageInfo.FLAG_OVERLAY_STATIC;
+        }
+
+        if (p.mTrustedOverlay) {
+            pi.overlayFlags |= PackageInfo.FLAG_OVERLAY_TRUSTED;
+        }
+
         pi.firstInstallTime = firstInstallTime;
         pi.lastUpdateTime = lastUpdateTime;
         if ((flags&PackageManager.GET_GIDS) != 0) {
diff --git a/services/core/java/com/android/server/om/OverlayManagerService.java b/services/core/java/com/android/server/om/OverlayManagerService.java
index 2940a6e..0b3efdb 100644
--- a/services/core/java/com/android/server/om/OverlayManagerService.java
+++ b/services/core/java/com/android/server/om/OverlayManagerService.java
@@ -669,7 +669,8 @@
     };
 
     private boolean isOverlayPackage(@NonNull final PackageInfo pi) {
-        return pi != null && pi.overlayTarget != null;
+        return pi != null && pi.overlayTarget != null
+                && (pi.overlayFlags & PackageInfo.FLAG_OVERLAY_TRUSTED) != 0;
     }
 
     private final class OverlayChangeListener
diff --git a/services/core/java/com/android/server/om/OverlayManagerServiceImpl.java b/services/core/java/com/android/server/om/OverlayManagerServiceImpl.java
index db6e974..497d79d 100644
--- a/services/core/java/com/android/server/om/OverlayManagerServiceImpl.java
+++ b/services/core/java/com/android/server/om/OverlayManagerServiceImpl.java
@@ -68,6 +68,11 @@
         mListener = listener;
     }
 
+    private static boolean isPackageStaticOverlay(final PackageInfo packageInfo) {
+        return packageInfo.overlayTarget != null
+                && (packageInfo.overlayFlags & PackageInfo.FLAG_OVERLAY_STATIC) != 0;
+    }
+
     /**
      * Call this to synchronize the Settings for a user with what PackageManager knows about a user.
      * Returns a list of target packages that must refresh their overlays. This list is the union
@@ -102,11 +107,11 @@
                 mSettings.init(overlayPackage.packageName, newUserId,
                         overlayPackage.overlayTarget,
                         overlayPackage.applicationInfo.getBaseCodePath(),
-                        overlayPackage.isStaticOverlay, overlayPackage.overlayPriority);
+                        isPackageStaticOverlay(overlayPackage), overlayPackage.overlayPriority);
 
                 if (oi == null) {
                     // This overlay does not exist in our settings.
-                    if (overlayPackage.isStaticOverlay ||
+                    if (isPackageStaticOverlay(overlayPackage) ||
                             mDefaultOverlays.contains(overlayPackage.packageName)) {
                         // Enable this overlay by default.
                         if (DEBUG) {
@@ -255,8 +260,8 @@
                 mPackageManager.getPackageInfo(overlayPackage.overlayTarget, userId);
 
         mSettings.init(packageName, userId, overlayPackage.overlayTarget,
-                overlayPackage.applicationInfo.getBaseCodePath(), overlayPackage.isStaticOverlay,
-                overlayPackage.overlayPriority);
+                overlayPackage.applicationInfo.getBaseCodePath(),
+                isPackageStaticOverlay(overlayPackage), overlayPackage.overlayPriority);
         try {
             if (updateState(targetPackage, overlayPackage, userId)) {
                 mListener.onOverlaysChanged(overlayPackage.overlayTarget, userId);
@@ -313,7 +318,7 @@
         }
 
         // Ignore static overlays.
-        if (overlayPackage.isStaticOverlay) {
+        if (isPackageStaticOverlay(overlayPackage)) {
             return false;
         }
 
@@ -363,7 +368,7 @@
                     continue;
                 }
 
-                if (disabledOverlayPackageInfo.isStaticOverlay) {
+                if (isPackageStaticOverlay(disabledOverlayPackageInfo)) {
                     // Don't touch static overlays.
                     continue;
                 }
@@ -388,7 +393,7 @@
 
     private boolean isPackageUpdatableOverlay(@NonNull final String packageName, final int userId) {
         final PackageInfo overlayPackage = mPackageManager.getPackageInfo(packageName, userId);
-        if (overlayPackage == null || overlayPackage.isStaticOverlay) {
+        if (overlayPackage == null || isPackageStaticOverlay(overlayPackage)) {
             return false;
         }
         return true;
@@ -483,7 +488,8 @@
             throws OverlayManagerSettings.BadKeyException {
         // Static RROs targeting to "android", ie framework-res.apk, are handled by native layers.
         if (targetPackage != null &&
-                !("android".equals(targetPackage.packageName) && overlayPackage.isStaticOverlay)) {
+                !("android".equals(targetPackage.packageName)
+                        && isPackageStaticOverlay(overlayPackage))) {
             mIdmapManager.createIdmap(targetPackage, overlayPackage, userId);
         }