diff --git a/api/current.txt b/api/current.txt
index ceccfb7..caaec21 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -852,6 +852,7 @@
     field public static final int reqNavigation = 16843306; // 0x101022a
     field public static final int reqTouchScreen = 16843303; // 0x1010227
     field public static final int required = 16843406; // 0x101028e
+    field public static final int requiredAccountType = 16843734; // 0x10103d6
     field public static final int requiredForAllUsers = 16843728; // 0x10103d0
     field public static final int requiresFadingEdge = 16843685; // 0x10103a5
     field public static final int requiresSmallestWidthDp = 16843620; // 0x1010364
diff --git a/core/java/android/content/pm/PackageInfo.java b/core/java/android/content/pm/PackageInfo.java
index 33a6757..af1a6d5 100644
--- a/core/java/android/content/pm/PackageInfo.java
+++ b/core/java/android/content/pm/PackageInfo.java
@@ -224,6 +224,9 @@
     /** @hide */
     public String restrictedAccountType;
 
+    /** @hide */
+    public String requiredAccountType;
+
     public PackageInfo() {
     }
 
@@ -266,6 +269,7 @@
         dest.writeInt(installLocation);
         dest.writeInt(requiredForAllUsers ? 1 : 0);
         dest.writeString(restrictedAccountType);
+        dest.writeString(requiredAccountType);
     }
 
     public static final Parcelable.Creator<PackageInfo> CREATOR
@@ -306,5 +310,6 @@
         installLocation = source.readInt();
         requiredForAllUsers = source.readInt() != 0;
         restrictedAccountType = source.readString();
+        requiredAccountType = source.readString();
     }
 }
diff --git a/core/java/android/content/pm/PackageParser.java b/core/java/android/content/pm/PackageParser.java
index 5a50ec2..3586573 100644
--- a/core/java/android/content/pm/PackageParser.java
+++ b/core/java/android/content/pm/PackageParser.java
@@ -289,6 +289,7 @@
         pi.installLocation = p.installLocation;
         pi.requiredForAllUsers = p.mRequiredForAllUsers;
         pi.restrictedAccountType = p.mRestrictedAccountType;
+        pi.requiredAccountType = p.mRequiredAccountType;
         pi.firstInstallTime = firstInstallTime;
         pi.lastUpdateTime = lastUpdateTime;
         if ((flags&PackageManager.GET_GIDS) != 0) {
@@ -1816,13 +1817,19 @@
                     false)) {
                 owner.mRequiredForAllUsers = true;
             }
-            String accountType = sa.getString(com.android.internal.R.styleable
+            String restrictedAccountType = sa.getString(com.android.internal.R.styleable
                     .AndroidManifestApplication_restrictedAccountType);
-            if (accountType != null && accountType.length() > 0) {
-                owner.mRestrictedAccountType = accountType;
+            if (restrictedAccountType != null && restrictedAccountType.length() > 0) {
+                owner.mRestrictedAccountType = restrictedAccountType;
             }
         }
 
+        String requiredAccountType = sa.getString(com.android.internal.R.styleable
+                .AndroidManifestApplication_requiredAccountType);
+        if (requiredAccountType != null && requiredAccountType.length() > 0) {
+            owner.mRequiredAccountType = requiredAccountType;
+        }
+
         if (sa.getBoolean(
                 com.android.internal.R.styleable.AndroidManifestApplication_debuggable,
                 false)) {
@@ -3339,6 +3346,9 @@
         /* The restricted account authenticator type that is used by this application */
         public String mRestrictedAccountType;
 
+        /* The required account type without which this application will not function */
+        public String mRequiredAccountType;
+
         /**
          * Digest suitable for comparing whether this package's manifest is the
          * same as another.
diff --git a/core/res/res/values/attrs_manifest.xml b/core/res/res/values/attrs_manifest.xml
index 7f5a3dc..8821a01d 100644
--- a/core/res/res/values/attrs_manifest.xml
+++ b/core/res/res/values/attrs_manifest.xml
@@ -909,8 +909,13 @@
         <!-- Declare that this application requires access to restricted accounts of a certain
              type. The default value is null and restricted accounts won\'t be visible to this
              application. The type should correspond to the account authenticator type, such as
-             "com.google" -->
+             "com.google". Only usable by system apps. -->
         <attr name="restrictedAccountType" format="string"/>
+        <!-- Declare that this application requires an account of a certain
+             type. The default value is null and indicates that the application can work without
+             any accounts. The type should correspond to the account authenticator type, such as
+             "com.google". -->
+        <attr name="requiredAccountType" format="string"/>
     </declare-styleable>
     
     <!-- The <code>permission</code> tag declares a security permission that can be
diff --git a/core/res/res/values/public.xml b/core/res/res/values/public.xml
index 42d692f..074d91f 100644
--- a/core/res/res/values/public.xml
+++ b/core/res/res/values/public.xml
@@ -2042,6 +2042,7 @@
   <public type="attr" name="childIndicatorStart" />
   <public type="attr" name="childIndicatorEnd" />
   <public type="attr" name="restrictedAccountType" />
+  <public type="attr" name="requiredAccountType" />
 
   <public type="style" name="Theme.NoTitleBar.Overscan" />
   <public type="style" name="Theme.Light.NoTitleBar.Overscan" />