Update panel layout immediately after the user has finished resizing a panel.

chrome/browser/ui/panels/panel_browsertest.cc

Index: chrome/browser/ui/panels/panel_browsertest.cc
diff --git a/chrome/browser/ui/panels/panel_browsertest.cc b/chrome/browser/ui/panels/panel_browsertest.cc
index 856377386859aaac1a63b768896b26936e4ae813..1ffb616b58c7df411f517080c3fdf7623f02fbc5 100644
--- a/chrome/browser/ui/panels/panel_browsertest.cc
+++ b/chrome/browser/ui/panels/panel_browsertest.cc
@@ -40,6 +40,7 @@
 #include "extensions/common/constants.h"
 #include "net/base/net_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "ui/base/hit_test.h"
 #include "ui/events/event_utils.h"
 #include "ui/gfx/screen.h"
 
@@ -1579,7 +1580,7 @@ IN_PROC_BROWSER_TEST_F(PanelBrowserTest,
   gfx::Point mouse_location = panel->GetBounds().origin();
   panel_manager->StartResizingByMouse(panel,
                                       mouse_location,
-                                      panel::RESIZE_TOP_LEFT);
+                                      HTTOPLEFT);
   mouse_location.Offset(panel->GetBounds().width() - bigger_size.width(),
                         panel->GetBounds().height() - bigger_size.height());
   panel_manager->ResizeByMouse(mouse_location);