Update the way OMS records details about overlays

Use flags, since we keep introducing boolean traits which would
be wasteful to encode as booleans.

Bug: 69383160
Test: builds
Change-Id: Ic09ae1086c7afa039b5df11e4c8c968125784586
Merged-In: Ic09ae1086c7afa039b5df11e4c8c968125784586
(cherry picked from commit 9e19121a00b85d7618bf294f70afa0f205e3ac00)
diff --git a/src/com/android/settings/display/ThemePreferenceController.java b/src/com/android/settings/display/ThemePreferenceController.java
index 3bb58b1..5eeb390 100644
--- a/src/com/android/settings/display/ThemePreferenceController.java
+++ b/src/com/android/settings/display/ThemePreferenceController.java
@@ -125,7 +125,7 @@
     private boolean isChangeableOverlay(String packageName) {
         try {
             PackageInfo pi = mPackageManager.getPackageInfo(packageName, 0);
-            return pi != null && !pi.isStaticOverlay;
+            return pi != null && (pi.overlayFlags & PackageInfo.FLAG_OVERLAY_STATIC) == 0;
         } catch (PackageManager.NameNotFoundException e) {
             return false;
         }
diff --git a/tests/unit/src/com/android/settings/display/ThemePreferenceControllerTest.java b/tests/unit/src/com/android/settings/display/ThemePreferenceControllerTest.java
index 69c8c54..8c6e8da 100644
--- a/tests/unit/src/com/android/settings/display/ThemePreferenceControllerTest.java
+++ b/tests/unit/src/com/android/settings/display/ThemePreferenceControllerTest.java
@@ -119,7 +119,7 @@
             return info;
         });
         PackageInfo pi = new PackageInfo();
-        pi.isStaticOverlay = true;
+        pi.overlayFlags |= PackageInfo.FLAG_OVERLAY_STATIC;
         when(mMockPackageManager.getPackageInfo(eq("com.android.Theme1"), anyInt())).thenReturn(pi);
         when(mMockPackageManager.getPackageInfo(eq("com.android.Theme2"), anyInt())).thenReturn(
                 new PackageInfo());