[Ash] Always show minimize button.

ash/frame/caption_buttons/frame_caption_button_container_view.cc

Index: ash/frame/caption_buttons/frame_caption_button_container_view.cc
diff --git a/ash/frame/caption_buttons/frame_caption_button_container_view.cc b/ash/frame/caption_buttons/frame_caption_button_container_view.cc
index b9dc7455ef995c5f684b380353e11b0b4490cc54..53bdd97e43d0cb5b0f980728692b364a98406027 100644
--- a/ash/frame/caption_buttons/frame_caption_button_container_view.cc
+++ b/ash/frame/caption_buttons/frame_caption_button_container_view.cc
@@ -109,8 +109,7 @@ const char FrameCaptionButtonContainerView::kViewClassName[] =
     "FrameCaptionButtonContainerView";
 
 FrameCaptionButtonContainerView::FrameCaptionButtonContainerView(
-    views::Widget* frame,
-    MinimizeAllowed minimize_allowed)
+    views::Widget* frame)
     : frame_(frame),
       minimize_button_(NULL),
       size_button_(NULL),
@@ -127,7 +126,6 @@ FrameCaptionButtonContainerView::FrameCaptionButtonContainerView(
   minimize_button_ = new FrameCaptionButton(this, CAPTION_BUTTON_ICON_MINIMIZE);
   minimize_button_->SetAccessibleName(
       l10n_util::GetStringUTF16(IDS_APP_ACCNAME_MINIMIZE));
-  minimize_button_->SetVisible(minimize_allowed == MINIMIZE_ALLOWED);
   AddChildView(minimize_button_);
 
   size_button_ = new FrameSizeButton(this, frame, this);