Created min size for print preview dialog and modified to allow the

ui/views/widget/widget_delegate.h

 // 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.
 
 #ifndef UI_VIEWS_WIDGET_WIDGET_DELEGATE_H_
 #define UI_VIEWS_WIDGET_WIDGET_DELEGATE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 18 matching lines @@
 // Handles events on Widgets in context-specific ways.
 class VIEWS_EXPORT WidgetDelegate {
  public:
   WidgetDelegate();
 
   // Sets the return value of CanActivate(). Default is true.
   void set_can_activate(bool can_activate) {
     can_activate_ = can_activate;
   }
 
+  void set_top_level(bool is_top_level) {
+    is_top_level_ = is_top_level;
+  }
+
   // Called whenever the widget's position changes.
   virtual void OnWidgetMove();
 
   // Called with the display changes (color depth or resolution).
   virtual void OnDisplayChanged();
 
   // Called when the work area (the desktop area minus task bars,
   // menu bars, etc.) changes in size.
   virtual void OnWorkAreaChanged();
 
   // Returns the view that should have the focus when the widget is shown.  If
   // NULL no view is focused.
   virtual View* GetInitiallyFocusedView();
 
   virtual BubbleDialogDelegateView* AsBubbleDialogDelegate();
   virtual DialogDelegate* AsDialogDelegate();
 
   // Returns true if the window can be resized.
   virtual bool CanResize() const;
 
   // Returns true if the window can be maximized.
   virtual bool CanMaximize() const;
 
   // Returns true if the window can be minimized.
   virtual bool CanMinimize() const;
 
   // Returns true if the window can be activated.
   virtual bool CanActivate() const;
 
+  virtual bool IsTopLevel() const;
+
   // Returns the modal type that applies to the widget. Default is
   // ui::MODAL_TYPE_NONE (not modal).
   virtual ui::ModalType GetModalType() const;
 
   virtual ui::AXRole GetAccessibleWindowRole() const;
 
   // Returns the title to be read with screen readers.
   virtual base::string16 GetAccessibleWindowTitle() const;
 
   // Returns the text to be displayed in the window title.
@@ skipping 106 matching lines @@
   // be cycled through with keyboard focus.
   virtual void GetAccessiblePanes(std::vector<View*>* panes) {}
 
  protected:
   virtual ~WidgetDelegate() {}
 
  private:
   View* default_contents_view_;
 
   bool can_activate_;
+  bool is_top_level_;
 
   DISALLOW_COPY_AND_ASSIGN(WidgetDelegate);
 };
 
 // A WidgetDelegate implementation that is-a View. Used to override GetWidget()
 // to call View's GetWidget() for the common case where a WidgetDelegate
 // implementation is-a View. Note that WidgetDelegateView is not owned by
 // view's hierarchy and is expected to be deleted on DeleteDelegate call.
 class VIEWS_EXPORT WidgetDelegateView : public WidgetDelegate, public View {
  public:
@@ skipping 11 matching lines @@
   // View:
   const char* GetClassName() const override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WidgetDelegateView);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_WIDGET_DELEGATE_H_