Adds retrieving a raw contact id from a data item.

Change-Id: I956a53211719cfaa85ce3cd18ee15616eb571a97
diff --git a/src/com/android/contacts/common/model/dataitem/DataItem.java b/src/com/android/contacts/common/model/dataitem/DataItem.java
index 5115365..26d5a9f 100644
--- a/src/com/android/contacts/common/model/dataitem/DataItem.java
+++ b/src/com/android/contacts/common/model/dataitem/DataItem.java
@@ -99,6 +99,10 @@
         mContentValues.put(Data.RAW_CONTACT_ID, rawContactId);
     }
 
+    public Long getRawContactId() {
+        return mContentValues.getAsLong(Data.RAW_CONTACT_ID);
+    }
+
     /**
      * Returns the data id.
      */