diff --git a/config/hiddenapi-light-greylist.txt b/config/hiddenapi-light-greylist.txt
index 2bf417b8a8be8..35325dcbcd1c0 100644
--- a/config/hiddenapi-light-greylist.txt
+++ b/config/hiddenapi-light-greylist.txt
@@ -1,23 +1,5 @@
 Landroid/accessibilityservice/IAccessibilityServiceConnection$Stub;-><init>()V
 Landroid/accessibilityservice/IAccessibilityServiceConnection$Stub;->asInterface(Landroid/os/IBinder;)Landroid/accessibilityservice/IAccessibilityServiceConnection;
-Landroid/accounts/Account;->accessId:Ljava/lang/String;
-Landroid/accounts/Account;->TAG:Ljava/lang/String;
-Landroid/accounts/AccountAndUser;-><init>(Landroid/accounts/Account;I)V
-Landroid/accounts/AccountAndUser;->account:Landroid/accounts/Account;
-Landroid/accounts/AccountAndUser;->userId:I
-Landroid/accounts/AccountAuthenticatorResponse;-><init>(Landroid/accounts/IAccountAuthenticatorResponse;)V
-Landroid/accounts/AccountManager$AmsTask;->mActivity:Landroid/app/Activity;
-Landroid/accounts/AccountManager$AmsTask;->mHandler:Landroid/os/Handler;
-Landroid/accounts/AccountManager$AmsTask;->mResponse:Landroid/accounts/IAccountManagerResponse;
-Landroid/accounts/AccountManager$GetAuthTokenByTypeAndFeaturesTask;->mAuthTokenType:Ljava/lang/String;
-Landroid/accounts/AccountManager$GetAuthTokenByTypeAndFeaturesTask;->mLoginOptions:Landroid/os/Bundle;
-Landroid/accounts/AccountManager$GetAuthTokenByTypeAndFeaturesTask;->mMyCallback:Landroid/accounts/AccountManagerCallback;
-Landroid/accounts/AccountManager;-><init>(Landroid/content/Context;Landroid/accounts/IAccountManager;)V
-Landroid/accounts/AccountManager;->confirmCredentialsAsUser(Landroid/accounts/Account;Landroid/os/Bundle;Landroid/app/Activity;Landroid/accounts/AccountManagerCallback;Landroid/os/Handler;Landroid/os/UserHandle;)Landroid/accounts/AccountManagerFuture;
-Landroid/accounts/AccountManager;->getAccountsByTypeAsUser(Ljava/lang/String;Landroid/os/UserHandle;)[Landroid/accounts/Account;
-Landroid/accounts/AccountManager;->mContext:Landroid/content/Context;
-Landroid/accounts/AuthenticatorDescription;-><init>(Landroid/os/Parcel;)V
-Landroid/accounts/AuthenticatorDescription;-><init>(Ljava/lang/String;)V
 Landroid/accounts/IAccountAuthenticator$Stub$Proxy;-><init>(Landroid/os/IBinder;)V
 Landroid/accounts/IAccountAuthenticator$Stub$Proxy;->mRemote:Landroid/os/IBinder;
 Landroid/accounts/IAccountAuthenticator$Stub;-><init>()V
diff --git a/config/hiddenapi-vendor-list.txt b/config/hiddenapi-vendor-list.txt
index c1933fc46f58c..a9094482be9b5 100644
--- a/config/hiddenapi-vendor-list.txt
+++ b/config/hiddenapi-vendor-list.txt
@@ -1,4 +1,3 @@
-Landroid/accounts/AccountManager;-><init>(Landroid/content/Context;Landroid/accounts/IAccountManager;Landroid/os/Handler;)V
 Landroid/app/Activity;->managedQuery(Landroid/net/Uri;[Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)Landroid/database/Cursor;
 Landroid/app/Activity;->registerRemoteAnimations(Landroid/view/RemoteAnimationDefinition;)V
 Landroid/app/ActivityManager$RecentTaskInfo;->configuration:Landroid/content/res/Configuration;
diff --git a/core/java/android/accounts/Account.java b/core/java/android/accounts/Account.java
index b6e85f18a6952..f07f5ece7bc1c 100644
--- a/core/java/android/accounts/Account.java
+++ b/core/java/android/accounts/Account.java
@@ -18,6 +18,7 @@ package android.accounts;
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
+import android.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.os.Parcelable;
 import android.os.Parcel;
@@ -36,6 +37,7 @@ import java.util.Set;
  * suitable for use as the key of a {@link java.util.Map}
  */
 public class Account implements Parcelable {
+    @UnsupportedAppUsage
     private static final String TAG = "Account";
 
     @GuardedBy("sAccessedAccounts")
@@ -43,6 +45,7 @@ public class Account implements Parcelable {
 
     public final String name;
     public final String type;
+    @UnsupportedAppUsage
     private final @Nullable String accessId;
 
     public boolean equals(Object o) {
diff --git a/core/java/android/accounts/AccountAndUser.java b/core/java/android/accounts/AccountAndUser.java
index 04157cc31847b..b0d53438d97ce 100644
--- a/core/java/android/accounts/AccountAndUser.java
+++ b/core/java/android/accounts/AccountAndUser.java
@@ -16,15 +16,20 @@
 
 package android.accounts;
 
+import android.annotation.UnsupportedAppUsage;
+
 /**
  * Used to store the Account and the UserId this account is associated with.
  *
  * @hide
  */
 public class AccountAndUser {
+    @UnsupportedAppUsage
     public Account account;
+    @UnsupportedAppUsage
     public int userId;
 
+    @UnsupportedAppUsage
     public AccountAndUser(Account account, int userId) {
         this.account = account;
         this.userId = userId;
diff --git a/core/java/android/accounts/AccountAuthenticatorResponse.java b/core/java/android/accounts/AccountAuthenticatorResponse.java
index 41f26ac164b76..bcc9f90c35f18 100644
--- a/core/java/android/accounts/AccountAuthenticatorResponse.java
+++ b/core/java/android/accounts/AccountAuthenticatorResponse.java
@@ -16,6 +16,7 @@
 
 package android.accounts;
 
+import android.annotation.UnsupportedAppUsage;
 import android.os.Bundle;
 import android.os.Parcelable;
 import android.os.Parcel;
@@ -33,6 +34,7 @@ public class AccountAuthenticatorResponse implements Parcelable {
     /**
      * @hide
      */
+    @UnsupportedAppUsage
     public AccountAuthenticatorResponse(IAccountAuthenticatorResponse response) {
         mAccountAuthenticatorResponse = response;
     }
diff --git a/core/java/android/accounts/AccountManager.java b/core/java/android/accounts/AccountManager.java
index 5176d71ea67b7..3189d089e6d84 100644
--- a/core/java/android/accounts/AccountManager.java
+++ b/core/java/android/accounts/AccountManager.java
@@ -27,6 +27,7 @@ import android.annotation.SystemApi;
 import android.annotation.SystemService;
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.BroadcastBehavior;
+import android.annotation.UnsupportedAppUsage;
 import android.app.Activity;
 import android.content.BroadcastReceiver;
 import android.content.ComponentName;
@@ -336,6 +337,7 @@ public class AccountManager {
     public static final String ACCOUNT_ACCESS_TOKEN_TYPE =
             "com.android.AccountManager.ACCOUNT_ACCESS_TOKEN_TYPE";
 
+    @UnsupportedAppUsage
     private final Context mContext;
     private final IAccountManager mService;
     private final Handler mMainHandler;
@@ -409,6 +411,7 @@ public class AccountManager {
     /**
      * @hide
      */
+    @UnsupportedAppUsage
     public AccountManager(Context context, IAccountManager service) {
         mContext = context;
         mService = service;
@@ -418,6 +421,7 @@ public class AccountManager {
     /**
      * @hide used for testing only
      */
+    @UnsupportedAppUsage
     public AccountManager(Context context, IAccountManager service, Handler handler) {
         mContext = context;
         mService = service;
@@ -685,6 +689,7 @@ public class AccountManager {
 
     /** @hide Same as {@link #getAccountsByType(String)} but for a specific user. */
     @NonNull
+    @UnsupportedAppUsage
     public Account[] getAccountsByTypeAsUser(String type, UserHandle userHandle) {
         try {
             return mService.getAccountsAsUser(type, userHandle.getIdentifier(),
@@ -2014,6 +2019,7 @@ public class AccountManager {
      * Same as {@link #confirmCredentials(Account, Bundle, Activity, AccountManagerCallback, Handler)}
      * but for the specified user.
      */
+    @UnsupportedAppUsage
     public AccountManagerFuture<Bundle> confirmCredentialsAsUser(final Account account,
             final Bundle options,
             final Activity activity,
@@ -2225,9 +2231,12 @@ public class AccountManager {
     }
 
     private abstract class AmsTask extends FutureTask<Bundle> implements AccountManagerFuture<Bundle> {
+        @UnsupportedAppUsage
         final IAccountManagerResponse mResponse;
+        @UnsupportedAppUsage
         final Handler mHandler;
         final AccountManagerCallback<Bundle> mCallback;
+        @UnsupportedAppUsage
         final Activity mActivity;
         public AmsTask(Activity activity, Handler handler, AccountManagerCallback<Bundle> callback) {
             super(new Callable<Bundle>() {
@@ -2552,10 +2561,13 @@ public class AccountManager {
         }
         volatile AccountManagerFuture<Bundle> mFuture = null;
         final String mAccountType;
+        @UnsupportedAppUsage
         final String mAuthTokenType;
         final String[] mFeatures;
         final Bundle mAddAccountOptions;
+        @UnsupportedAppUsage
         final Bundle mLoginOptions;
+        @UnsupportedAppUsage
         final AccountManagerCallback<Bundle> mMyCallback;
         private volatile int mNumAccounts = 0;
 
diff --git a/core/java/android/accounts/AuthenticatorDescription.java b/core/java/android/accounts/AuthenticatorDescription.java
index 5d9abb068bd88..6875867108de2 100644
--- a/core/java/android/accounts/AuthenticatorDescription.java
+++ b/core/java/android/accounts/AuthenticatorDescription.java
@@ -16,6 +16,7 @@
 
 package android.accounts;
 
+import android.annotation.UnsupportedAppUsage;
 import android.os.Parcelable;
 import android.os.Parcel;
 
@@ -76,6 +77,7 @@ public class AuthenticatorDescription implements Parcelable {
         return new AuthenticatorDescription(type);
     }
 
+    @UnsupportedAppUsage
     private AuthenticatorDescription(String type) {
         this.type = type;
         this.packageName = null;
@@ -86,6 +88,7 @@ public class AuthenticatorDescription implements Parcelable {
         this.customTokens = false;
     }
 
+    @UnsupportedAppUsage
     private AuthenticatorDescription(Parcel source) {
         this.type = source.readString();
         this.packageName = source.readString();