Start window manager refactoring.

Move all of the pieces into a new com.android.server.wm package.

Change-Id: I942b7bcfb84ee0f843f47d58e55ffc5a93c0da94
diff --git a/services/java/com/android/server/StatusBarManagerService.java b/services/java/com/android/server/StatusBarManagerService.java
index 5ada77b..8df8177 100644
--- a/services/java/com/android/server/StatusBarManagerService.java
+++ b/services/java/com/android/server/StatusBarManagerService.java
@@ -39,6 +39,7 @@
 import com.android.internal.statusbar.StatusBarIcon;
 import com.android.internal.statusbar.StatusBarIconList;
 import com.android.internal.statusbar.StatusBarNotification;
+import com.android.server.wm.WindowManagerService;
 
 import java.io.FileDescriptor;
 import java.io.PrintWriter;