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

chrome/browser/ui/views/panels/panel_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 "chrome/browser/ui/views/panels/panel_frame_view.h"
 
 #include "chrome/browser/ui/panels/panel.h"
 #include "chrome/browser/ui/panels/panel_constants.h"
 #include "chrome/browser/ui/views/panels/panel_view.h"
 #include "chrome/browser/ui/views/tab_icon_view.h"
@@ skipping 398 matching lines @@
   int titlebar_height = TitlebarHeight();
   int border_thickness = BorderThickness();
   // The window bounds include both client area and non-client area (titlebar
   // and left, right and bottom borders).
   return gfx::Rect(client_bounds.x() - border_thickness,
                    client_bounds.y() - titlebar_height,
                    client_bounds.width() + border_thickness * 2,
                    client_bounds.height() + titlebar_height + border_thickness);
 }
 
-int PanelFrameView::NonClientHitTest(const gfx::Point& point) {
+int PanelFrameView::NonClientHitTest(const gfx::Point& point) const {
   panel::Resizability resizability = panel_view_->panel()->CanResizeByMouse();
 
   // Check the frame first, as we allow a small area overlapping the contents
   // to be used for resize handles.
   int frame_component = GetFrameEdgeHitTest(
       point, size(), PanelView::kResizeInsideBoundsSize, resizability);
 
   if (frame_component != HTNOWHERE)
     return frame_component;
 
@@ skipping 331 matching lines @@
 
   // Draw the left border.
   canvas->TileImageInt(left_image,
                        0,
                        top_left_image.height(),
                        left_image.width(),
                        height() - top_left_image.height() -
                            bottom_left_image.height());
 #endif
 }