Make panel window's header color customizable in Ash.

chrome/browser/ui/views/apps/chrome_native_app_window_views_aura.cc

 // Copyright 2015 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/apps/chrome_native_app_window_views_aura.h"
 
 #include "apps/ui/views/app_window_frame_view.h"
 #include "ash/ash_constants.h"
 #include "ash/frame/custom_frame_view_ash.h"
 #include "ash/screen_util.h"
@@ skipping 307 matching lines @@
     // WindowStateDelegate if one is not already set.
     ash::wm::GetWindowState(GetNativeWindow())
         ->SetDelegate(
             scoped_ptr<ash::wm::WindowStateDelegate>(
                 new NativeAppWindowStateDelegate(app_window(), this)).Pass());
 
     if (IsFrameless())
       return CreateNonStandardAppFrame();
 
     if (app_window()->window_type_is_panel()) {
-      views::NonClientFrameView* frame_view =
+      ash::PanelFrameView* frame_view =
           new ash::PanelFrameView(widget, ash::PanelFrameView::FRAME_ASH);
       frame_view->set_context_menu_controller(this);
+      if (HasFrameColor())
+        frame_view->SetFrameColors(ActiveFrameColor(), InactiveFrameColor());
       return frame_view;
     }
 
     ash::CustomFrameViewAsh* custom_frame_view =
         new ash::CustomFrameViewAsh(widget);
     // Non-frameless app windows can be put into immersive fullscreen.
     immersive_fullscreen_controller_.reset(
         new ash::ImmersiveFullscreenController());
     custom_frame_view->InitImmersiveFullscreenControllerForView(
         immersive_fullscreen_controller_.get());
@@ skipping 36 matching lines @@
   ChromeNativeAppWindowViews::UpdateShape(region.Pass());
 
   aura::Window* native_window = widget()->GetNativeWindow();
   if (shape() && !had_shape) {
     native_window->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
         new ShapedAppWindowTargeter(native_window, this)));
   } else if (!shape() && had_shape) {
     native_window->SetEventTargeter(scoped_ptr<ui::EventTargeter>());
   }
 }