diff --git a/core/java/android/app/usage/NetworkStats.java b/core/java/android/app/usage/NetworkStats.java
index 226aa8f270..f64bec73e4 100644
--- a/core/java/android/app/usage/NetworkStats.java
+++ b/core/java/android/app/usage/NetworkStats.java
@@ -163,6 +163,29 @@ public final class NetworkStats implements AutoCloseable {
          */
         public static final int UID_TETHERING = TrafficStats.UID_TETHERING;
 
+        /** @hide */
+        @IntDef({METERED_ALL, METERED_NO, METERED_YES})
+        @Retention(RetentionPolicy.SOURCE)
+        public @interface Metered {}
+
+        /**
+         * Combined usage across all metered states. Covers metered and unmetered usage.
+         */
+        public static final int METERED_ALL = -1;
+
+        /**
+         * Usage that occurs on an unmetered network.
+         */
+        public static final int METERED_NO = 0x1;
+
+        /**
+         * Usage that occurs on a metered network.
+         *
+         * <p>A network is classified as metered when the user is sensitive to heavy data usage on
+         * that connection.
+         */
+        public static final int METERED_YES = 0x2;
+
         /** @hide */
         @IntDef({ROAMING_ALL, ROAMING_NO, ROAMING_YES})
         @Retention(RetentionPolicy.SOURCE)
@@ -200,6 +223,7 @@ public final class NetworkStats implements AutoCloseable {
         private int mUid;
         private int mTag;
         private int mState;
+        private int mMetered;
         private int mRoaming;
         private long mBeginTimeStamp;
         private long mEndTimeStamp;
@@ -278,6 +302,21 @@ public final class NetworkStats implements AutoCloseable {
             return mState;
         }
 
+        /**
+         * Metered state. One of the following values:<p/>
+         * <ul>
+         * <li>{@link #METERED_ALL}</li>
+         * <li>{@link #METERED_NO}</li>
+         * <li>{@link #METERED_YES}</li>
+         * </ul>
+         * <p>A network is classified as metered when the user is sensitive to heavy data usage on
+         * that connection. Apps may warn before using these networks for large downloads. The
+         * metered state can be set by the user within data usage network restrictions.
+         */
+        public @Metered int getMetered() {
+            return mMetered;
+        }
+
         /**
          * Roaming state. One of the following values:<p/>
          * <ul>
@@ -491,6 +530,8 @@ public final class NetworkStats implements AutoCloseable {
         bucketOut.mUid = Bucket.convertUid(mRecycledSummaryEntry.uid);
         bucketOut.mTag = Bucket.convertTag(mRecycledSummaryEntry.tag);
         bucketOut.mState = Bucket.convertState(mRecycledSummaryEntry.set);
+        // TODO: Implement metered tracking.
+        bucketOut.mMetered = Bucket.METERED_ALL;
         bucketOut.mRoaming = Bucket.convertRoaming(mRecycledSummaryEntry.roaming);
         bucketOut.mBeginTimeStamp = mStartTimeStamp;
         bucketOut.mEndTimeStamp = mEndTimeStamp;
@@ -539,6 +580,7 @@ public final class NetworkStats implements AutoCloseable {
                 bucketOut.mUid = Bucket.convertUid(getUid());
                 bucketOut.mTag = Bucket.convertTag(mTag);
                 bucketOut.mState = Bucket.STATE_ALL;
+                bucketOut.mMetered = Bucket.METERED_ALL;
                 bucketOut.mRoaming = Bucket.ROAMING_ALL;
                 bucketOut.mBeginTimeStamp = mRecycledHistoryEntry.bucketStart;
                 bucketOut.mEndTimeStamp = mRecycledHistoryEntry.bucketStart +
diff --git a/core/java/android/net/nsd/NsdManager.java b/core/java/android/net/nsd/NsdManager.java
index 86bd502826..33d12a3a3f 100644
--- a/core/java/android/net/nsd/NsdManager.java
+++ b/core/java/android/net/nsd/NsdManager.java
@@ -103,11 +103,11 @@ import com.android.internal.util.Protocol;
  * to {@link DiscoveryListener#onServiceFound} and a service lost is notified on
  * {@link DiscoveryListener#onServiceLost}.
  *
- * <p> Once the peer application discovers the "Example" http srevice, and needs to receive data
- * from the "Example" application, it can initiate a resolve with {@link #resolveService} to
- * resolve the host and port details for the purpose of establishing a connection. A successful
- * resolve is notified on {@link ResolveListener#onServiceResolved} and a failure is notified
- * on {@link ResolveListener#onResolveFailed}.
+ * <p> Once the peer application discovers the "Example" http service, and either needs to read the
+ * attributes of the service or wants to receive data from the "Example" application, it can
+ * initiate a resolve with {@link #resolveService} to resolve the attributes, host, and port
+ * details. A successful resolve is notified on {@link ResolveListener#onServiceResolved} and a
+ * failure is notified on {@link ResolveListener#onResolveFailed}.
  *
  * Applications can reserve for a service type at
  * http://www.iana.org/form/ports-service. Existing services can be found at
diff --git a/core/java/android/net/nsd/NsdServiceInfo.java b/core/java/android/net/nsd/NsdServiceInfo.java
index 4a06fb1220..7b845be749 100644
--- a/core/java/android/net/nsd/NsdServiceInfo.java
+++ b/core/java/android/net/nsd/NsdServiceInfo.java
@@ -250,7 +250,8 @@ public final class NsdServiceInfo implements Parcelable {
     }
 
     /**
-     * Retrive attributes as a map of String keys to byte[] values.
+     * Retrieve attributes as a map of String keys to byte[] values. The attributes map is only
+     * valid for a resolved service.
      *
      * <p> The returned map is unmodifiable; changes must be made through {@link #setAttribute} and
      * {@link #removeAttribute}.