Merge "Revert "Revert "Revert "HULK SMASH! We've gotta declare REL."""" into sc-dev am: 83f88bc43a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14994638

Change-Id: I34aeb3bf6e279e6fe7c577f97ae55cb34b0e373b

core/java/android/app/PendingIntent.java

@@ -365,7 +365,6 @@ public final class PendingIntent implements Parcelable {
         }
 
         if (Compatibility.isChangeEnabled(PENDING_INTENT_EXPLICIT_MUTABILITY_REQUIRED)
-                && !"com.google.android.apps.gcs".equals(packageName)
                 && !flagImmutableSet && !flagMutableSet) {
             String msg = packageName + ": Targeting S+ (version " + Build.VERSION_CODES.S
                     + " and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE"