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

ash/wm/custom_frame_view_ash.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 "ash/wm/custom_frame_view_ash.h"
 
 #include "ash/shell_delegate.h"
 #include "ash/wm/frame_painter.h"
 #include "ash/wm/workspace/frame_maximize_button.h"
 #include "grit/ash_resources.h"
@@ skipping 72 matching lines @@
                                                 bounds());
 }
 
 gfx::Rect CustomFrameViewAsh::GetWindowBoundsForClientBounds(
     const gfx::Rect& client_bounds) const {
   int top_height = NonClientTopBorderHeight();
   return frame_painter_->GetWindowBoundsForClientBounds(top_height,
                                                         client_bounds);
 }
 
-int CustomFrameViewAsh::NonClientHitTest(const gfx::Point& point) {
+int CustomFrameViewAsh::NonClientHitTest(const gfx::Point& point) const {
   return frame_painter_->NonClientHitTest(this, point);
 }
 
 void CustomFrameViewAsh::GetWindowMask(const gfx::Size& size,
                                        gfx::Path* window_mask) {
   // No window masks in Aura.
 }
 
 void CustomFrameViewAsh::ResetWindowControls() {
   maximize_button_->SetState(views::CustomButton::STATE_NORMAL);
@@ skipping 104 matching lines @@
   if (frame_->IsFullscreen())
     return 0;
 
   // Reserve enough space to see the buttons, including any offset from top and
   // reserving space for the separator line.
   return close_button_->bounds().bottom() +
       frame_painter_->HeaderContentSeparatorSize();
 }
 
 }  // namespace ash