[Ozone-GBM] Adding NativeWindowDelegate to IPC window changes to the GPU

ui/ozone/platform/dri/screen_manager.h

Index: ui/ozone/platform/dri/screen_manager.h
diff --git a/ui/ozone/platform/dri/screen_manager.h b/ui/ozone/platform/dri/screen_manager.h
index 9c151bab124dc94ad0a48afd291880526ada5de8..1dc1e52ea24c5a8e043285ee75782db6adf6ff36 100644
--- a/ui/ozone/platform/dri/screen_manager.h
+++ b/ui/ozone/platform/dri/screen_manager.h
@@ -55,6 +55,15 @@ class ScreenManager {
   base::WeakPtr<HardwareDisplayController> GetDisplayController(
       gfx::AcceleratedWidget widget);
 
+  // Returns a reference to the display controller configured to display within
+  // |bounds|.
+  // This returns a weak reference since the display controller may be destroyed
+  // at any point in time, but the changes are propagated to the compositor much
+  // later (Compositor owns SurfaceOzone*, which is responsible for updating the
+  // display surface).
+  base::WeakPtr<HardwareDisplayController> GetDisplayController(
+      const gfx::Rect& bounds);
+
  private:
   typedef std::map<gfx::AcceleratedWidget, HardwareDisplayController*>
       HardwareDisplayControllerMap;
@@ -69,6 +78,11 @@ class ScreenManager {
   HardwareDisplayControllerMap::iterator FindDisplayControllerByOrigin(
       const gfx::Point& origin);
 
+  // Returns an iterator into |controllers_| for the controller located within
+  // |bounds|.
+  HardwareDisplayControllerMap::iterator FindActiveDisplayControllerByLocation(
+      const gfx::Rect& bounds);
+
   // Perform modesetting in |controller| using |origin| and |mode|.
   bool ModesetDisplayController(HardwareDisplayController* controller,
                                 const gfx::Point& origin,