[Ash] Always show minimize button.

ash/frame/custom_frame_view_ash.cc

Index: ash/frame/custom_frame_view_ash.cc
diff --git a/ash/frame/custom_frame_view_ash.cc b/ash/frame/custom_frame_view_ash.cc
index 450015a32a3256d21b24c3845886d9bdcd4755b3..169e8aef9285266ee3f6bc5ceeb65a5e41831ca0 100644
--- a/ash/frame/custom_frame_view_ash.cc
+++ b/ash/frame/custom_frame_view_ash.cc
@@ -202,14 +202,7 @@ CustomFrameViewAsh::HeaderView::HeaderView(views::Widget* frame)
       avatar_icon_(NULL),
       caption_button_container_(NULL),
       fullscreen_visible_fraction_(0) {
-  // Unfortunately, there is no views::WidgetDelegate::CanMinimize(). Assume
-  // that the window frame can be minimized if it can be maximized.
-  FrameCaptionButtonContainerView::MinimizeAllowed minimize_allowed =
-      frame_->widget_delegate()->CanMaximize() ?
-          FrameCaptionButtonContainerView::MINIMIZE_ALLOWED :
-          FrameCaptionButtonContainerView::MINIMIZE_DISALLOWED;
-  caption_button_container_ = new FrameCaptionButtonContainerView(frame_,
-      minimize_allowed);
+  caption_button_container_ = new FrameCaptionButtonContainerView(frame_);
   caption_button_container_->UpdateSizeButtonVisibility();
   AddChildView(caption_button_container_);