views::ImageButton: Added SetMinimumImageSize; removed SetPreferredSize.

ui/app_list/views/contents_switcher_view.h

 // Copyright 2014 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.
 
 #ifndef UI_APP_LIST_VIEWS_CONTENTS_SWITCHER_VIEW_H_
 #define UI_APP_LIST_VIEWS_CONTENTS_SWITCHER_VIEW_H_
 
 #include <map>
 
 #include "base/basictypes.h"
@@ skipping 10 matching lines @@
 class ContentsSwitcherView : public views::View,
                              public views::ButtonListener,
                              public PaginationModelObserver {
  public:
   explicit ContentsSwitcherView(ContentsView* contents_view);
   virtual ~ContentsSwitcherView();
 
   ContentsView* contents_view() const { return contents_view_; }
 
   // Adds a switcher button using |resource_id| as the button's image, which
-  // opens the page with index |page_index| in the ContentsView. |resource_id|
-  // is ignored if it is 0.
+  // opens the page with index |page_index| in the ContentsView.
   void AddSwitcherButton(int resource_id, int page_index);
 
  private:
   // Overridden from views::ButtonListener:
   virtual void ButtonPressed(views::Button* sender,
                              const ui::Event& event) OVERRIDE;
 
   // Overridden from PaginationModelObserver:
   virtual void TotalPagesChanged() OVERRIDE;
   virtual void SelectedPageChanged(int old_selected, int new_selected) OVERRIDE;
   virtual void TransitionStarted() OVERRIDE;
   virtual void TransitionChanged() OVERRIDE;
 
   ContentsView* contents_view_;  // Owned by views hierarchy.
 
   // Maps page indices to Views owned by views hierarchy.
   std::map<int, views::View*> page_active_indicators_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentsSwitcherView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_CONTENTS_SWITCHER_VIEW_H_