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/ContactsActivity.java b/src/com/android/contacts/ContactsActivity.java
index f3ac147..b94a237 100644
--- a/src/com/android/contacts/ContactsActivity.java
+++ b/src/com/android/contacts/ContactsActivity.java
@@ -26,7 +26,7 @@
 import android.view.View;
 
 import com.android.contacts.common.activity.TransactionSafeActivity;
-import com.android.contacts.test.InjectedServices;
+import com.android.contacts.common.test.InjectedServices;
 
 /**
  * A common superclass for Contacts activities that handles application-wide services.