Color picker window should not have a minimize button.

ui/views/color_chooser/color_chooser_view.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_COLOR_CHOOSER_COLOR_CHOOSER_VIEW_H_
 #define UI_VIEWS_COLOR_CHOOSER_COLOR_CHOOSER_VIEW_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "third_party/skia/include/core/SkColor.h"
@@ skipping 30 matching lines @@
   float saturation() const { return hsv_[1]; }
   float value() const { return hsv_[2]; }
   void set_listener(ColorChooserListener* listener) { listener_ = listener; }
 
  private:
   class HueView;
   class SaturationValueView;
   class SelectedColorPatchView;
 
   // WidgetDelegate overrides:
+  virtual bool CanMinimize() const OVERRIDE;
   virtual View* GetInitiallyFocusedView() OVERRIDE;
   virtual ui::ModalType GetModalType() const OVERRIDE;
   virtual void WindowClosing() OVERRIDE;
   virtual View* GetContentsView() OVERRIDE;
 
   // TextfieldController overrides:
   virtual void ContentsChanged(Textfield* sender,
                                const base::string16& new_contents) OVERRIDE;
   virtual bool HandleKeyEvent(Textfield* sender,
                               const ui::KeyEvent& key_event) OVERRIDE;
@@ skipping 18 matching lines @@
 
   // The rectangle to denote the selected color.
   SelectedColorPatchView* selected_color_patch_;
 
   DISALLOW_COPY_AND_ASSIGN(ColorChooserView);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_COLOR_CHOOSER_COLOR_CHOOSER_VIEW_H_