Disables the maximize button for an app window with a maximum size and a custom frame color

apps/ui/views/app_window_frame_view.cc

 // Copyright 2014 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 "apps/ui/views/app_window_frame_view.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "extensions/browser/app_window/native_app_window.h"
 #include "extensions/common/draggable_region.h"
 #include "grit/theme_resources.h"
@@ skipping 211 matching lines @@
 
   // Caption is a safe default.
   return HTCAPTION;
 }
 
 void AppWindowFrameView::GetWindowMask(const gfx::Size& size,
                                        gfx::Path* window_mask) {
   // We got nothing to say about no window mask.
 }
 
+void AppWindowFrameView::SizeConstraintsChanged() {
+  if (draw_frame_) {
+    maximize_button_->SetEnabled(widget_->widget_delegate() &&
+                                 widget_->widget_delegate()->CanMaximize());
+  }
+}
+
 gfx::Size AppWindowFrameView::GetPreferredSize() const {
   gfx::Size pref = widget_->client_view()->GetPreferredSize();
   gfx::Rect bounds(0, 0, pref.width(), pref.height());
   return widget_->non_client_view()
       ->GetWindowBoundsForClientBounds(bounds)
       .size();
 }
 
 void AppWindowFrameView::Layout() {
   if (!draw_frame_)
     return;
   gfx::Size close_size = close_button_->GetPreferredSize();
   const int kButtonOffsetY = 0;
   const int kButtonSpacing = 1;
   const int kRightMargin = 3;
 
   close_button_->SetBounds(width() - kRightMargin - close_size.width(),
                            kButtonOffsetY,
                            close_size.width(),
                            close_size.height());
 
-  bool can_ever_resize = widget_->widget_delegate()
-                             ? widget_->widget_delegate()->CanResize()
-                             : false;
-  maximize_button_->SetEnabled(can_ever_resize);
+  maximize_button_->SetEnabled(widget_->widget_delegate() &&
+                               widget_->widget_delegate()->CanMaximize());
   gfx::Size maximize_size = maximize_button_->GetPreferredSize();
   maximize_button_->SetBounds(
       close_button_->x() - kButtonSpacing - maximize_size.width(),
       kButtonOffsetY,
       maximize_size.width(),
       maximize_size.height());
   gfx::Size restore_size = restore_button_->GetPreferredSize();
   restore_button_->SetBounds(
       close_button_->x() - kButtonSpacing - restore_size.width(),
       kButtonOffsetY,
@@ skipping 124 matching lines @@
     restore_button_->SetImage(
         views::CustomButton::STATE_NORMAL,
         rb.GetNativeImageNamed(IDR_APP_WINDOW_RESTORE).ToImageSkia());
     minimize_button_->SetImage(
         views::CustomButton::STATE_NORMAL,
         rb.GetNativeImageNamed(IDR_APP_WINDOW_MINIMIZE).ToImageSkia());
   }
 }
 
 }  // namespace apps