Revert of Make WindowState::CanMinimize() take into account WidgetDelegate::CanMinimize()

ash/frame/caption_buttons/frame_caption_button_container_view.h

Index: ash/frame/caption_buttons/frame_caption_button_container_view.h
diff --git a/ash/frame/caption_buttons/frame_caption_button_container_view.h b/ash/frame/caption_buttons/frame_caption_button_container_view.h
index 1314f38d6c52702c97a2160215fbd2c612064f6b..658df05ea637bd2fb2b726a54f759d860dc073ba 100644
--- a/ash/frame/caption_buttons/frame_caption_button_container_view.h
+++ b/ash/frame/caption_buttons/frame_caption_button_container_view.h
@@ -33,8 +33,18 @@
  public:
   static const char kViewClassName[];
 
+  // Whether the frame can be minimized (either via the maximize/restore button
+  // or via a dedicated button).
+  enum MinimizeAllowed {
+    MINIMIZE_ALLOWED,
+    MINIMIZE_DISALLOWED
+  };
+
   // |frame| is the views::Widget that the caption buttons act on.
-  explicit FrameCaptionButtonContainerView(views::Widget* frame);
+  // |minimize_allowed| indicates whether the frame can be minimized (either via
+  // the maximize/restore button or via a dedicated button).
+  FrameCaptionButtonContainerView(views::Widget* frame,
+                                  MinimizeAllowed minimize_allowed);
   virtual ~FrameCaptionButtonContainerView();
 
   // For testing.