Move State to base and root stuff to roots.

And move Shared to base.
And lots more to base.

Change-Id: I8b01264a329473c13c59f0cd25a320ba73dbd82d
diff --git a/src/com/android/documentsui/DirectoryLoader.java b/src/com/android/documentsui/DirectoryLoader.java
index 8a14e31..ab79d01 100644
--- a/src/com/android/documentsui/DirectoryLoader.java
+++ b/src/com/android/documentsui/DirectoryLoader.java
@@ -30,7 +30,9 @@
 import android.util.Log;
 
 import com.android.documentsui.base.DocumentInfo;
+import com.android.documentsui.base.FilteringCursorWrapper;
 import com.android.documentsui.base.RootInfo;
+import com.android.documentsui.roots.RootCursorWrapper;
 import com.android.documentsui.sorting.SortModel;
 
 import java.io.FileNotFoundException;