Add Mouse hover behavior to Mac Panels when minimized

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index 300ed1ee71b7fc99402bf7b90f498d963f8cca44..2bc7172b99306a58473bfffc94c9eaeebdaad5bf 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -3051,7 +3051,7 @@
         'browser/ui/panels/panel_manager.h',
         'browser/ui/panels/panel_mouse_watcher.cc',
         'browser/ui/panels/panel_mouse_watcher.h',
-        'browser/ui/panels/panel_mouse_watcher_gtk.cc',
+        'browser/ui/panels/panel_mouse_watcher_timer.cc',
         'browser/ui/panels/panel_mouse_watcher_win.cc',
         'browser/ui/panels/panel_mouse_watcher_win.h',
         'browser/ui/panels/panel_settings_menu_model.cc',
@@ -4772,7 +4772,7 @@
                 ['exclude', '^browser/ui/gtk/omnibox/omnibox_popup_view_gtk.h'],
                 ['exclude', '^browser/ui/panels/panel_browser_window_gtk.cc'],
                 ['exclude', '^browser/ui/panels/panel_browser_window_gtk.h'],
-                ['exclude', '^browser/ui/panels/panel_mouse_watcher_gtk.cc'],
+                ['exclude', '^browser/ui/panels/panel_mouse_watcher_timer.cc'],
               ],
             }],
             # Exclude the GTK versions of dialogs if webui_dialogs are enabled.