diff --git a/api/current.txt b/api/current.txt
index a948c97..1848a8f93 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -23240,8 +23240,10 @@
     method public java.lang.String getDefaultUrl();
     method public int getRequestType();
     field public static final int REQUEST_TYPE_INITIAL = 0; // 0x0
+    field public static final int REQUEST_TYPE_NONE = 3; // 0x3
     field public static final int REQUEST_TYPE_RELEASE = 2; // 0x2
     field public static final int REQUEST_TYPE_RENEWAL = 1; // 0x1
+    field public static final int REQUEST_TYPE_UPDATE = 4; // 0x4
   }
 
   public static final class MediaDrm.KeyStatus {
diff --git a/media/java/android/media/MediaDrm.java b/media/java/android/media/MediaDrm.java
index b908c21..063186d 100644
--- a/media/java/android/media/MediaDrm.java
+++ b/media/java/android/media/MediaDrm.java
@@ -679,12 +679,14 @@
         private int mRequestType;
 
         /**
-         * Key request type is initial license request
+         * Key request type is initial license request. A license request
+         * is necessary to load keys.
          */
         public static final int REQUEST_TYPE_INITIAL = 0;
 
         /**
-         * Key request type is license renewal
+         * Key request type is license renewal. A license request is
+         * necessary to prevent the keys from expiring.
          */
         public static final int REQUEST_TYPE_RENEWAL = 1;
 
@@ -693,11 +695,25 @@
          */
         public static final int REQUEST_TYPE_RELEASE = 2;
 
+        /**
+         * Keys are already loaded. No license request is necessary, and no
+         * key request data is returned.
+         */
+        public static final int REQUEST_TYPE_NONE = 3;
+
+        /**
+         * Keys have been loaded but an additional license request is needed
+         * to update their values.
+         */
+        public static final int REQUEST_TYPE_UPDATE = 4;
+
         /** @hide */
         @IntDef({
             REQUEST_TYPE_INITIAL,
             REQUEST_TYPE_RENEWAL,
             REQUEST_TYPE_RELEASE,
+            REQUEST_TYPE_NONE,
+            REQUEST_TYPE_UPDATE,
         })
         @Retention(RetentionPolicy.SOURCE)
         public @interface RequestType {}
@@ -738,7 +754,8 @@
         /**
          * Get the type of the request
          * @return one of {@link #REQUEST_TYPE_INITIAL},
-         * {@link #REQUEST_TYPE_RENEWAL} or {@link #REQUEST_TYPE_RELEASE}
+         * {@link #REQUEST_TYPE_RENEWAL}, {@link #REQUEST_TYPE_RELEASE},
+         * {@link #REQUEST_TYPE_NONE} or {@link #REQUEST_TYPE_UPDATE}
          */
         @RequestType
         public int getRequestType() { return mRequestType; }
diff --git a/media/jni/android_media_MediaDrm.cpp b/media/jni/android_media_MediaDrm.cpp
index bbed93d..95b07f1 100644
--- a/media/jni/android_media_MediaDrm.cpp
+++ b/media/jni/android_media_MediaDrm.cpp
@@ -114,6 +114,8 @@
     jint kKeyRequestTypeInitial;
     jint kKeyRequestTypeRenewal;
     jint kKeyRequestTypeRelease;
+    jint kKeyRequestTypeNone;
+    jint kKeyRequestTypeUpdate;
 } gKeyRequestTypes;
 
 struct CertificateTypes {
@@ -692,6 +694,10 @@
     gKeyRequestTypes.kKeyRequestTypeRenewal = env->GetStaticIntField(clazz, field);
     GET_STATIC_FIELD_ID(field, clazz, "REQUEST_TYPE_RELEASE", "I");
     gKeyRequestTypes.kKeyRequestTypeRelease = env->GetStaticIntField(clazz, field);
+    GET_STATIC_FIELD_ID(field, clazz, "REQUEST_TYPE_NONE", "I");
+    gKeyRequestTypes.kKeyRequestTypeNone = env->GetStaticIntField(clazz, field);
+    GET_STATIC_FIELD_ID(field, clazz, "REQUEST_TYPE_UPDATE", "I");
+    gKeyRequestTypes.kKeyRequestTypeUpdate = env->GetStaticIntField(clazz, field);
 
     FIND_CLASS(clazz, "android/media/MediaDrm$ProvisionRequest");
     GET_FIELD_ID(gFields.provisionRequest.data, clazz, "mData", "[B");
@@ -922,6 +928,15 @@
                 env->SetIntField(keyObj, gFields.keyRequest.requestType,
                         gKeyRequestTypes.kKeyRequestTypeRelease);
                 break;
+            case DrmPlugin::kKeyRequestType_None:
+                env->SetIntField(keyObj, gFields.keyRequest.requestType,
+                        gKeyRequestTypes.kKeyRequestTypeNone);
+                break;
+            case DrmPlugin::kKeyRequestType_Update:
+                env->SetIntField(keyObj, gFields.keyRequest.requestType,
+                        gKeyRequestTypes.kKeyRequestTypeUpdate);
+                break;
+
             default:
                 throwStateException(env, "DRM plugin failure: unknown key request type",
                         ERROR_DRM_UNKNOWN);