Migrate to @Override to remove warnings.

Bug: 6303344
Change-Id: I0d33b2ed448467379d576ccd71fb5ae20c878852

core/java/android/net/NetworkStats.java

@@ -155,7 +155,7 @@ public class NetworkStats implements Parcelable {
         operations = parcel.createLongArray();
     }
 
-    /** {@inheritDoc} */
+    @Override
     public void writeToParcel(Parcel dest, int flags) {
         dest.writeLong(elapsedRealtime);
         dest.writeInt(size);
@@ -662,16 +662,18 @@ public class NetworkStats implements Parcelable {
         return writer.toString();
     }
 
-    /** {@inheritDoc} */
+    @Override
     public int describeContents() {
         return 0;
     }
 
     public static final Creator<NetworkStats> CREATOR = new Creator<NetworkStats>() {
+        @Override
         public NetworkStats createFromParcel(Parcel in) {
             return new NetworkStats(in);
         }
 
+        @Override
         public NetworkStats[] newArray(int size) {
             return new NetworkStats[size];
         }

core/java/android/net/NetworkStatsHistory.java

@@ -130,7 +130,7 @@ public class NetworkStatsHistory implements Parcelable {
         totalBytes = in.readLong();
     }
 
-    /** {@inheritDoc} */
+    @Override
     public void writeToParcel(Parcel out, int flags) {
         out.writeLong(bucketDuration);
         writeLongArray(out, bucketStart, bucketCount);
@@ -191,7 +191,7 @@ public class NetworkStatsHistory implements Parcelable {
         writeVarLongArray(out, operations, bucketCount);
     }
 
-    /** {@inheritDoc} */
+    @Override
     public int describeContents() {
         return 0;
     }
@@ -586,10 +586,12 @@ public class NetworkStatsHistory implements Parcelable {
     }
 
     public static final Creator<NetworkStatsHistory> CREATOR = new Creator<NetworkStatsHistory>() {
+        @Override
         public NetworkStatsHistory createFromParcel(Parcel in) {
             return new NetworkStatsHistory(in);
         }
 
+        @Override
         public NetworkStatsHistory[] newArray(int size) {
             return new NetworkStatsHistory[size];
         }