Refactor WindowFinder definition

chrome/browser/ui/views/tabs/window_finder_chromeos.cc

Index: chrome/browser/ui/views/tabs/window_finder_chromeos.cc
diff --git a/chrome/browser/ui/views/tabs/window_finder_chromeos.cc b/chrome/browser/ui/views/tabs/window_finder_chromeos.cc
index f4d0f226993aa06f08a2bda9a064c85163100fca..0bc9248398fcc53bf669df046d6c9ae5daa900e6 100644
--- a/chrome/browser/ui/views/tabs/window_finder_chromeos.cc
+++ b/chrome/browser/ui/views/tabs/window_finder_chromeos.cc
@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/views/tabs/window_finder.h"
+#include "chrome/browser/ui/views/tabs/window_finder_mus.h"
 
 #include "ui/aura/window.h"
 
@@ -13,5 +14,9 @@ gfx::NativeWindow GetLocalProcessWindowAtPointAsh(
 gfx::NativeWindow WindowFinder::GetLocalProcessWindowAtPoint(
     const gfx::Point& screen_point,
     const std::set<gfx::NativeWindow>& ignore) {
+  gfx::NativeWindow mus_result = nullptr;
+  if (GetLocalProcessWindowAtPointMus(screen_point, ignore, &mus_result))
+    return mus_result;
+
   return GetLocalProcessWindowAtPointAsh(screen_point, ignore);
 }