diff --git a/api/11.xml b/api/11.xml
index 5b6765b888ee8..d59d80a1c988f 100644
--- a/api/11.xml
+++ b/api/11.xml
@@ -61562,6 +61562,46 @@
  visibility="public"
 >
 </field>
+<field name="externalCacheSize"
+ type="long"
+ transient="false"
+ volatile="false"
+ static="false"
+ final="false"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</field>
+<field name="externalDataSize"
+ type="long"
+ transient="false"
+ volatile="false"
+ static="false"
+ final="false"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</field>
+<field name="externalMediaSize"
+ type="long"
+ transient="false"
+ volatile="false"
+ static="false"
+ final="false"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</field>
+<field name="externalObbSize"
+ type="long"
+ transient="false"
+ volatile="false"
+ static="false"
+ final="false"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</field>
 <field name="packageName"
  type="java.lang.String"
  transient="false"
diff --git a/api/current.xml b/api/current.xml
index ef23af2ff0006..b9ebd1c7175f7 100644
--- a/api/current.xml
+++ b/api/current.xml
@@ -61592,6 +61592,16 @@
  visibility="public"
 >
 </field>
+<field name="externalObbSize"
+ type="long"
+ transient="false"
+ volatile="false"
+ static="false"
+ final="false"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</field>
 <field name="packageName"
  type="java.lang.String"
  transient="false"
@@ -183903,6 +183913,17 @@
  visibility="public"
 >
 </method>
+<method name="getObbDir"
+ return="java.io.File"
+ abstract="false"
+ native="false"
+ synchronized="false"
+ static="false"
+ final="false"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</method>
 <method name="getPackageCodePath"
  return="java.lang.String"
  abstract="false"
diff --git a/core/java/android/content/pm/PackageStats.java b/core/java/android/content/pm/PackageStats.java
index 28a2886478853..11068e5d164ec 100755
--- a/core/java/android/content/pm/PackageStats.java
+++ b/core/java/android/content/pm/PackageStats.java
@@ -55,6 +55,9 @@ public class PackageStats implements Parcelable {
     /** Size of the external media size used by the application. */
     public long externalMediaSize;
 
+    /** Size of the package's OBBs placed on external media. */
+    public long externalObbSize;
+
     public static final Parcelable.Creator<PackageStats> CREATOR
             = new Parcelable.Creator<PackageStats>() {
         public PackageStats createFromParcel(Parcel in) {
@@ -83,6 +86,8 @@ public class PackageStats implements Parcelable {
         sb.append(externalCacheSize);
         sb.append(",externalMediaSize=");
         sb.append(externalMediaSize);
+        sb.append(",externalObbSize=");
+        sb.append(externalObbSize);
         return sb.toString();
     }
 
@@ -98,6 +103,7 @@ public class PackageStats implements Parcelable {
         externalDataSize = source.readLong();
         externalCacheSize = source.readLong();
         externalMediaSize = source.readLong();
+        externalObbSize = source.readLong();
     }
 
     public PackageStats(PackageStats pStats) {
@@ -108,6 +114,7 @@ public class PackageStats implements Parcelable {
         externalDataSize = pStats.externalDataSize;
         externalCacheSize = pStats.externalCacheSize;
         externalMediaSize = pStats.externalMediaSize;
+        externalObbSize = pStats.externalObbSize;
     }
 
     public int describeContents() {
@@ -122,5 +129,6 @@ public class PackageStats implements Parcelable {
         dest.writeLong(externalDataSize);
         dest.writeLong(externalCacheSize);
         dest.writeLong(externalMediaSize);
+        dest.writeLong(externalObbSize);
     }
 }
diff --git a/services/java/com/android/server/PackageManagerService.java b/services/java/com/android/server/PackageManagerService.java
index 19667d4a1be67..d2c6475a872a1 100644
--- a/services/java/com/android/server/PackageManagerService.java
+++ b/services/java/com/android/server/PackageManagerService.java
@@ -4853,6 +4853,11 @@ class PackageManagerService extends IPackageManager.Stub {
                         .getExternalStorageAppMediaDirectory(mStats.packageName);
                 mStats.externalMediaSize = mContainerService
                         .calculateDirectorySize(externalCacheDir.getPath());
+
+                final File externalObbDir = Environment
+                        .getExternalStorageAppObbDirectory(mStats.packageName);
+                mStats.externalObbSize = mContainerService.calculateDirectorySize(externalObbDir
+                        .getPath());
             }
         }