Fix build.

Change-Id: I2a684a75047097f2d22879c2a1a8e2c484e6b090
diff --git a/tests/tests/media/src/android/media/cts/MediaDrmMockTest.java b/tests/tests/media/src/android/media/cts/MediaDrmMockTest.java
index a09d368..1a3184d 100644
--- a/tests/tests/media/src/android/media/cts/MediaDrmMockTest.java
+++ b/tests/tests/media/src/android/media/cts/MediaDrmMockTest.java
@@ -22,6 +22,7 @@
 import android.media.MediaDrm.CryptoSession;
 import android.media.MediaDrmException;
 import android.media.NotProvisionedException;
+import android.media.ResourceBusyException;
 import android.test.AndroidTestCase;
 import android.util.Log;
 import java.util.HashMap;
@@ -785,6 +786,8 @@
             sessionId = md.openSession();
         } catch (NotProvisionedException e) {
             // ignore, not thrown by mock
+        } catch (ResourceBusyException e) {
+            // ignore, not thrown by mock
         }
         return sessionId;
     }