Move ContactLoader related code to ContactsCommon

This CL simply moves classes from Contacts into ContactsCommon.

This is needed so that Dialer can use ContactLoader related code
for b/11294679. A ContactLoader will also be needed in the future
to allow InCallUI to download hi-res photos while in call.
Bug: 11294679

Change-Id: Ia033f3ea2406a907a4e71290c9ce810a5583dab8
diff --git a/src/com/android/contacts/ContactSaveService.java b/src/com/android/contacts/ContactSaveService.java
index 9f916fb..7a8f9f3 100644
--- a/src/com/android/contacts/ContactSaveService.java
+++ b/src/com/android/contacts/ContactSaveService.java
@@ -49,9 +49,9 @@
 
 import com.android.contacts.common.database.ContactUpdateUtils;
 import com.android.contacts.common.model.AccountTypeManager;
-import com.android.contacts.model.RawContactDelta;
-import com.android.contacts.model.RawContactDeltaList;
-import com.android.contacts.model.RawContactModifier;
+import com.android.contacts.common.model.RawContactDelta;
+import com.android.contacts.common.model.RawContactDeltaList;
+import com.android.contacts.common.model.RawContactModifier;
 import com.android.contacts.common.model.account.AccountWithDataSet;
 import com.android.contacts.util.CallerInfoCacheUtils;
 import com.android.contacts.util.ContactPhotoUtils;