Make the maximize button more easily hittable when there is a huge amount of tabs present

ui/views/window/custom_frame_view.cc

Index: ui/views/window/custom_frame_view.cc
diff --git a/ui/views/window/custom_frame_view.cc b/ui/views/window/custom_frame_view.cc
index 89979541a6cf2c92c69dace5102d26ad28eaa80d..ce8bdfbd5245ed311dc17cc06a724ff11fef2281 100644
--- a/ui/views/window/custom_frame_view.cc
+++ b/ui/views/window/custom_frame_view.cc
@@ -150,7 +150,7 @@ gfx::Rect CustomFrameView::GetWindowBoundsForClientBounds(
                    client_bounds.height() + top_height + border_thickness);
 }
 
-int CustomFrameView::NonClientHitTest(const gfx::Point& point) {
+int CustomFrameView::NonClientHitTest(const gfx::Point& point) const {
   // Sanity check.
   if (!bounds().Contains(point))
     return HTNOWHERE;