Revert "Revert "Publish DevicePolicyManager CA certificate APIs""

This reverts commit 792b270dbdc980cfe04e8d461bf00a1f45b5e936.

Change-Id: I18c7e0eca39868230cd8e4f4bbeb3c44ff9e8b78

keystore/java/android/security/KeyChain.java

@@ -23,7 +23,9 @@ import android.content.Intent;
 import android.content.ServiceConnection;
 import android.os.IBinder;
 import android.os.Looper;
+import android.os.Process;
 import android.os.RemoteException;
+import android.os.UserHandle;
 import java.io.ByteArrayInputStream;
 import java.io.Closeable;
 import java.security.InvalidKeyException;
@@ -437,6 +439,14 @@ public final class KeyChain {
      * Caller should call unbindService on the result when finished.
      */
     public static KeyChainConnection bind(Context context) throws InterruptedException {
+        return bindAsUser(context, Process.myUserHandle());
+    }
+
+    /**
+     * @hide
+     */
+    public static KeyChainConnection bindAsUser(Context context, UserHandle user)
+            throws InterruptedException {
         if (context == null) {
             throw new NullPointerException("context == null");
         }
@@ -459,9 +469,10 @@ public final class KeyChain {
         Intent intent = new Intent(IKeyChainService.class.getName());
         ComponentName comp = intent.resolveSystemService(context.getPackageManager(), 0);
         intent.setComponent(comp);
-        boolean isBound = context.bindService(intent,
-                                              keyChainServiceConnection,
-                                              Context.BIND_AUTO_CREATE);
+        boolean isBound = context.bindServiceAsUser(intent,
+                                                    keyChainServiceConnection,
+                                                    Context.BIND_AUTO_CREATE,
+                                                    user);
         if (!isBound) {
             throw new AssertionError("could not bind to KeyChainService");
         }