ozone: dri: Support moving between displays in MoveCursorTo(location)

ui/ozone/platform/dri/dri_window_manager.h

Index: ui/ozone/platform/dri/dri_window_manager.h
diff --git a/ui/ozone/platform/dri/dri_window_manager.h b/ui/ozone/platform/dri/dri_window_manager.h
index c0358cb98d8741d7371a330e30fa967f9ae57ba8..04c056d0aab400d9ca5fd988553f135d1cdaff57 100644
--- a/ui/ozone/platform/dri/dri_window_manager.h
+++ b/ui/ozone/platform/dri/dri_window_manager.h
@@ -10,6 +10,10 @@
 #include "base/memory/scoped_ptr.h"
 #include "ui/gfx/native_widget_types.h"
 
+namespace gfx {
+class Point;
+}
+
 namespace ui {
 
 class DriCursor;
@@ -37,6 +41,9 @@ class DriWindowManager {
   // only be called if a valid window has been associated.
   DriWindow* GetWindow(gfx::AcceleratedWidget widget);
 
+  // Returns the window containing the specified screen location, or NULL.
+  DriWindow* GetWindowAt(const gfx::Point& location);
+
   DriCursor* cursor() const { return cursor_.get(); }
 
  private: