add ash_resources.grd and necessary changes to use images in ash/resources

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/wm/frame_painter.h"
 #include "ash/wm/workspace/frame_maximize_button.h"
-#include "grit/ui_resources.h"
+#include "grit/ash_resources.h"
 #include "grit/ui_strings.h"  // Accessibility names
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/compositor/layer_animator.h"
 #include "ui/gfx/font.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/size.h"
 #include "ui/views/controls/button/image_button.h"
 #include "ui/views/widget/native_widget_aura.h"
@@ skipping 147 matching lines @@
 // CustomFrameViewAsh, private:
 
 int CustomFrameViewAsh::NonClientTopBorderHeight() const {
   // 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