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/ViewNotificationService.java b/src/com/android/contacts/ViewNotificationService.java
index 3bc5ed2..0f2922a 100644
--- a/src/com/android/contacts/ViewNotificationService.java
+++ b/src/com/android/contacts/ViewNotificationService.java
@@ -23,8 +23,8 @@
 import android.os.IBinder;
 import android.util.Log;
 
-import com.android.contacts.model.Contact;
-import com.android.contacts.model.ContactLoader;
+import com.android.contacts.common.model.Contact;
+import com.android.contacts.common.model.ContactLoader;
 
 
 /**