WM: Move WindowManagerPolicy, DisplayFrames and WindowManagerInternal into services

Splits WindowManagerPolicy into a framework and a services part, preventing concepts that are
internal to the window manager from leaking out into the framework.

Test: make droid
Change-Id: I7b6a54f55f76f6fbb5f27090981b8f1d4d8be88b
diff --git a/services/core/java/com/android/server/wm/PointerEventDispatcher.java b/services/core/java/com/android/server/wm/PointerEventDispatcher.java
index 484987e..ab8b8d4 100644
--- a/services/core/java/com/android/server/wm/PointerEventDispatcher.java
+++ b/services/core/java/com/android/server/wm/PointerEventDispatcher.java
@@ -21,7 +21,7 @@
 import android.view.InputEvent;
 import android.view.InputEventReceiver;
 import android.view.MotionEvent;
-import android.view.WindowManagerPolicy.PointerEventListener;
+import android.view.WindowManagerPolicyConstants.PointerEventListener;
 
 import com.android.server.UiThread;