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

ui/views/window/custom_frame_view.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/window/custom_frame_view.h"
 
 #include <algorithm>
 
 #include "base/strings/utf_string_conversions.h"
 #include "grit/ui_resources.h"
@@ skipping 132 matching lines @@
 gfx::Rect CustomFrameView::GetWindowBoundsForClientBounds(
     const gfx::Rect& client_bounds) const {
   int top_height = NonClientTopBorderHeight();
   int border_thickness = NonClientBorderThickness();
   return gfx::Rect(std::max(0, client_bounds.x() - border_thickness),
                    std::max(0, client_bounds.y() - top_height),
                    client_bounds.width() + (2 * border_thickness),
                    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;
 
   int frame_component = frame_->client_view()->NonClientHitTest(point);
 
   // See if we're in the sysmenu region.  (We check the ClientView first to be
   // consistent with OpaqueBrowserFrameView; it's not really necessary here.)
   gfx::Rect sysmenu_rect(IconBounds());
   // In maximized mode we extend the rect to the screen corner to take advantage
@@ skipping 400 matching lines @@
                    rb.GetImageNamed(normal_image_id).ToImageSkia());
   button->SetImage(CustomButton::STATE_HOVERED,
                    rb.GetImageNamed(hot_image_id).ToImageSkia());
   button->SetImage(CustomButton::STATE_PRESSED,
                    rb.GetImageNamed(pushed_image_id).ToImageSkia());
   AddChildView(button);
   return button;
 }
 
 }  // namespace views